<?xml version="1.0" encoding="UTF-8"?>

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2026 Workiva-->
<!--r:019c0197-2d96-7f12-8a49-ec8a92e939db,g:8de1f486-ecd2-47b9-adaf-d8ee285773e3-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:eght="http://8x8.com/20260331" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2024-01-31" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://8x8.com/20260331">
  <xs:import namespace="http://fasb.org/srt/2025" schemaLocation="https://xbrl.fasb.org/srt/2025/elts/srt-2025.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2025" schemaLocation="https://xbrl.fasb.org/us-gaap/2025/elts/us-gaap-2025.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/instance" schemaLocation="http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/2003/linkbase" schemaLocation="http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2024-01-31" schemaLocation="https://www.xbrl.org/dtr/type/2024-01-31/types.xsd"/>
  <xs:import namespace="http://xbrl.org/2005/xbrldt" schemaLocation="http://www.xbrl.org/2005/xbrldt-2005.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/country/2025" schemaLocation="https://xbrl.sec.gov/country/2025/country-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/cyd-af-sub/2025" schemaLocation="https://xbrl.sec.gov/cyd/2025/cyd-af-sub-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2025" schemaLocation="https://xbrl.sec.gov/dei/2025/dei-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2025" schemaLocation="https://xbrl.sec.gov/ecd/2025/ecd-2025.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/stpr/2025" schemaLocation="https://xbrl.sec.gov/stpr/2025/stpr-2025.xsd"/>
  <xs:annotation>
    <xs:appinfo>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="eght-20260331_pre.xml" xlink:role="http://www.xbrl.org/2003/role/presentationLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="eght-20260331_def.xml" xlink:role="http://www.xbrl.org/2003/role/definitionLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="eght-20260331_lab.xml" xlink:role="http://www.xbrl.org/2003/role/labelLinkbaseRef" xlink:type="simple"/>
      <link:linkbaseRef xmlns:xlink="http://www.w3.org/1999/xlink" xlink:arcrole="http://www.w3.org/1999/xlink/properties/linkbase" xlink:href="eght-20260331_cal.xml" xlink:role="http://www.xbrl.org/2003/role/calculationLinkbaseRef" xlink:type="simple"/>
      <link:roleType id="CoverPage" roleURI="http://8x8.com/role/CoverPage">
        <link:definition>0000001 - Document - Cover Page</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="AuditInformation" roleURI="http://8x8.com/role/AuditInformation">
        <link:definition>0000002 - Document - Audit Information</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETS" roleURI="http://8x8.com/role/CONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONSOLIDATED BALANCE SHEETS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://8x8.com/role/CONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONSOLIDATED BALANCE SHEETS (Parenthetical)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS" roleURI="http://8x8.com/role/CONSOLIDATEDSTATEMENTSOFOPERATIONSANDCOMPREHENSIVELOSS">
        <link:definition>9952153 - Statement - CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" roleURI="http://8x8.com/role/CONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
        <link:definition>9952154 - Statement - CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://8x8.com/role/CONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952155 - Statement - CONSOLIDATED STATEMENTS OF CASH FLOWS</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheCompanyandSignificantAccountingPolicies" roleURI="http://8x8.com/role/TheCompanyandSignificantAccountingPolicies">
        <link:definition>9952156 - Disclosure - The Company and Significant Accounting Policies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Revenue" roleURI="http://8x8.com/role/Revenue">
        <link:definition>9952157 - Disclosure - Revenue</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurements" roleURI="http://8x8.com/role/FairValueMeasurements">
        <link:definition>9952158 - Disclosure - Fair Value Measurements</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponents" roleURI="http://8x8.com/role/FinancialStatementComponents">
        <link:definition>9952159 - Disclosure - Financial Statement Components</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwill" roleURI="http://8x8.com/role/IntangibleAssetsandGoodwill">
        <link:definition>9952160 - Disclosure - Intangible Assets and Goodwill</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="Leases" roleURI="http://8x8.com/role/Leases">
        <link:definition>9952161 - Disclosure - Leases</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingencies" roleURI="http://8x8.com/role/CommitmentsandContingencies">
        <link:definition>9952162 - Disclosure - Commitments and Contingencies</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoan" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoan">
        <link:definition>9952163 - Disclosure - Convertible Senior Notes and Term Loan</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquity" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquity">
        <link:definition>9952164 - Disclosure - Stock-Based Compensation and Stockholders' Equity</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxes" roleURI="http://8x8.com/role/IncomeTaxes">
        <link:definition>9952165 - Disclosure - Income Taxes</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerShare" roleURI="http://8x8.com/role/NetIncomeLossPerShare">
        <link:definition>9952166 - Disclosure - Net Income (Loss) Per Share</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactions" roleURI="http://8x8.com/role/RelatedPartyTransactions">
        <link:definition>9952167 - Disclosure - Related Party Transactions</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEvent" roleURI="http://8x8.com/role/SubsequentEvent">
        <link:definition>9952168 - Disclosure - Subsequent Event</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheCompanyandSignificantAccountingPoliciesPolicies" roleURI="http://8x8.com/role/TheCompanyandSignificantAccountingPoliciesPolicies">
        <link:definition>9955511 - Disclosure - The Company and Significant Accounting Policies (Policies)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheCompanyandSignificantAccountingPoliciesTables" roleURI="http://8x8.com/role/TheCompanyandSignificantAccountingPoliciesTables">
        <link:definition>9955512 - Disclosure - The Company and Significant Accounting Policies (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueTables" roleURI="http://8x8.com/role/RevenueTables">
        <link:definition>9955513 - Disclosure - Revenue (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsTables" roleURI="http://8x8.com/role/FairValueMeasurementsTables">
        <link:definition>9955514 - Disclosure - Fair Value Measurements (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsTables" roleURI="http://8x8.com/role/FinancialStatementComponentsTables">
        <link:definition>9955515 - Disclosure - Financial Statement Components (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillTables" roleURI="http://8x8.com/role/IntangibleAssetsandGoodwillTables">
        <link:definition>9955516 - Disclosure - Intangible Assets and Goodwill (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesTables" roleURI="http://8x8.com/role/LeasesTables">
        <link:definition>9955517 - Disclosure - Leases (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanTables" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanTables">
        <link:definition>9955518 - Disclosure - Convertible Senior Notes and Term Loan (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityTables" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityTables">
        <link:definition>9955519 - Disclosure - Stock-Based Compensation and Stockholders' Equity (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesTables" roleURI="http://8x8.com/role/IncomeTaxesTables">
        <link:definition>9955520 - Disclosure - Income Taxes (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerShareTables" roleURI="http://8x8.com/role/NetIncomeLossPerShareTables">
        <link:definition>9955521 - Disclosure - Net Income (Loss) Per Share (Tables)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheCompanyandSignificantAccountingPoliciesNarrativeDetails" roleURI="http://8x8.com/role/TheCompanyandSignificantAccountingPoliciesNarrativeDetails">
        <link:definition>9955522 - Disclosure - The Company and Significant Accounting Policies - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="TheCompanyandSignificantAccountingPoliciesScheduleofPropertyPlantandEquipmentDetails" roleURI="http://8x8.com/role/TheCompanyandSignificantAccountingPoliciesScheduleofPropertyPlantandEquipmentDetails">
        <link:definition>9955523 - Disclosure - The Company and Significant Accounting Policies - Schedule of Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueScheduleofGeographicInformationDetails" roleURI="http://8x8.com/role/RevenueScheduleofGeographicInformationDetails">
        <link:definition>9955524 - Disclosure - Revenue - Schedule of Geographic Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueScheduleofContractBalancesDetails" roleURI="http://8x8.com/role/RevenueScheduleofContractBalancesDetails">
        <link:definition>9955525 - Disclosure - Revenue -Schedule of Contract Balances (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueNarrativeDetails" roleURI="http://8x8.com/role/RevenueNarrativeDetails">
        <link:definition>9955526 - Disclosure - Revenue - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueNarrativeDetails_1" roleURI="http://8x8.com/role/RevenueNarrativeDetails_1">
        <link:definition>9955526 - Disclosure - Revenue - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RevenueDeferredContractAcquisitionCostsDetails" roleURI="http://8x8.com/role/RevenueDeferredContractAcquisitionCostsDetails">
        <link:definition>9955527 - Disclosure - Revenue - Deferred Contract Acquisition Costs (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsCashCashEquivalentsandInvestmentswithHierarchyDetails" roleURI="http://8x8.com/role/FairValueMeasurementsCashCashEquivalentsandInvestmentswithHierarchyDetails">
        <link:definition>9955528 - Disclosure - Fair Value Measurements - Cash, Cash Equivalents and Investments with Hierarchy (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsNarrativeDetails" roleURI="http://8x8.com/role/FairValueMeasurementsNarrativeDetails">
        <link:definition>9955529 - Disclosure - Fair Value Measurements - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FairValueMeasurementsScheduleofAssumptionsUsedinDeterminationofFairValueDetails" roleURI="http://8x8.com/role/FairValueMeasurementsScheduleofAssumptionsUsedinDeterminationofFairValueDetails">
        <link:definition>9955530 - Disclosure - Fair Value Measurements - Schedule of Assumptions Used in Determination of Fair Value (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsScheduleofAccountsReceivableDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsScheduleofAccountsReceivableDetails">
        <link:definition>9955531 - Disclosure - Financial Statement Components - Schedule of Accounts Receivable (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsScheduleofAllowanceforCreditLossDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsScheduleofAllowanceforCreditLossDetails">
        <link:definition>9955532 - Disclosure - Financial Statement Components - Schedule of Allowance for Credit Loss (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsScheduleofPropertyPlantandEquipmentDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsScheduleofPropertyPlantandEquipmentDetails">
        <link:definition>9955533 - Disclosure - Financial Statement Components - Schedule of Property, Plant and Equipment (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsNarrativeDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsNarrativeDetails">
        <link:definition>9955534 - Disclosure - Financial Statement Components - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsScheduleofOtherCurrentAssetsDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsScheduleofOtherCurrentAssetsDetails">
        <link:definition>9955535 - Disclosure - Financial Statement Components - Schedule of Other Current Assets (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsScheduleofAccruedandOtherLiabilitiesDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsScheduleofAccruedandOtherLiabilitiesDetails">
        <link:definition>9955536 - Disclosure - Financial Statement Components - Schedule of Accrued and Other Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="FinancialStatementComponentsScheduleofOtherIncomeExpenseDetails" roleURI="http://8x8.com/role/FinancialStatementComponentsScheduleofOtherIncomeExpenseDetails">
        <link:definition>9955537 - Disclosure - Financial Statement Components - Schedule of Other Income (Expense) (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillScheduleOfIntangiblesDetails" roleURI="http://8x8.com/role/IntangibleAssetsandGoodwillScheduleOfIntangiblesDetails">
        <link:definition>9955538 - Disclosure - Intangible Assets and Goodwill - Schedule Of Intangibles (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillNarrativeDetails" roleURI="http://8x8.com/role/IntangibleAssetsandGoodwillNarrativeDetails">
        <link:definition>9955539 - Disclosure - Intangible Assets and Goodwill - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillScheduleOfFutureAmortizationOfIntangiblesDetails" roleURI="http://8x8.com/role/IntangibleAssetsandGoodwillScheduleOfFutureAmortizationOfIntangiblesDetails">
        <link:definition>9955540 - Disclosure - Intangible Assets and Goodwill - Schedule Of Future Amortization Of Intangibles (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IntangibleAssetsandGoodwillChangesinCarryingAmountofGoodwillbyLocationDetails" roleURI="http://8x8.com/role/IntangibleAssetsandGoodwillChangesinCarryingAmountofGoodwillbyLocationDetails">
        <link:definition>9955541 - Disclosure - Intangible Assets and Goodwill - Changes in Carrying Amount of Goodwill by Location (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesOperatingLeaseExpenseDetails" roleURI="http://8x8.com/role/LeasesOperatingLeaseExpenseDetails">
        <link:definition>9955542 - Disclosure - Leases - Operating Lease Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesScheduleofSupplementalCashFlowInformationDetails" roleURI="http://8x8.com/role/LeasesScheduleofSupplementalCashFlowInformationDetails">
        <link:definition>9955543 - Disclosure - Leases - Schedule of Supplemental Cash Flow Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesSupplementalleaseInformationDetails" roleURI="http://8x8.com/role/LeasesSupplementalleaseInformationDetails">
        <link:definition>9955544 - Disclosure - Leases - Supplemental lease Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesMaturityofLeaseLiabilitiesDetails" roleURI="http://8x8.com/role/LeasesMaturityofLeaseLiabilitiesDetails">
        <link:definition>9955545 - Disclosure - Leases - Maturity of Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesMaturityofLeaseLiabilitiesDetails_1" roleURI="http://8x8.com/role/LeasesMaturityofLeaseLiabilitiesDetails_1">
        <link:definition>9955545 - Disclosure - Leases - Maturity of Lease Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="LeasesNarrativeDetails" roleURI="http://8x8.com/role/LeasesNarrativeDetails">
        <link:definition>9955546 - Disclosure - Leases - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="CommitmentsandContingenciesDetails" roleURI="http://8x8.com/role/CommitmentsandContingenciesDetails">
        <link:definition>9955547 - Disclosure - Commitments and Contingencies (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanCarryingAmountDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanCarryingAmountDetails">
        <link:definition>9955548 - Disclosure - Convertible Senior Notes and Term Loan - Carrying Amount (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanScheduleofInterestExpenseDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanScheduleofInterestExpenseDetails">
        <link:definition>9955549 - Disclosure - Convertible Senior Notes and Term Loan - Schedule of Interest Expense (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanDelayedDrawTermLoanDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanDelayedDrawTermLoanDetails">
        <link:definition>9955550 - Disclosure - Convertible Senior Notes and Term Loan - Delayed Draw Term Loan (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanScheduleofPrincipalPaymentsDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanScheduleofPrincipalPaymentsDetails">
        <link:definition>9955551 - Disclosure - Convertible Senior Notes and Term Loan - Schedule of Principal Payments (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoan2024NotesDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoan2024NotesDetails">
        <link:definition>9955552 - Disclosure - Convertible Senior Notes and Term Loan - 2024 Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanTermLoanandWarrantsDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanTermLoanandWarrantsDetails">
        <link:definition>9955553 - Disclosure - Convertible Senior Notes and Term Loan - Term Loan and Warrants (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="ConvertibleSeniorNotesandTermLoanExchangeTransactionand2028NotesDetails" roleURI="http://8x8.com/role/ConvertibleSeniorNotesandTermLoanExchangeTransactionand2028NotesDetails">
        <link:definition>9955554 - Disclosure - Convertible Senior Notes and Term Loan - Exchange Transaction and 2028 Notes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityOutstandingEquityAwardsandEmployeeEquityIncentivePlansDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityOutstandingEquityAwardsandEmployeeEquityIncentivePlansDetails">
        <link:definition>9955555 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Outstanding Equity Awards and Employee Equity Incentive Plans (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityNarrativeDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityNarrativeDetails">
        <link:definition>9955556 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityStockBasedCompensationExpenseByStatementOfOperationsDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityStockBasedCompensationExpenseByStatementOfOperationsDetails">
        <link:definition>9955557 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Stock-Based Compensation Expense By Statement Of Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityStockBasedCompensationExpenseByAwardTypeDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityStockBasedCompensationExpenseByAwardTypeDetails">
        <link:definition>9955558 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Stock Based Compensation Expense By Award Type (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityStockPurchaseRightandRestrictedStockUnitActivityDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityStockPurchaseRightandRestrictedStockUnitActivityDetails">
        <link:definition>9955559 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Stock Purchase Right and Restricted Stock Unit Activity (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityPerformanceStockUnitsInformationDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityPerformanceStockUnitsInformationDetails">
        <link:definition>9955560 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Performance Stock Units Information (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="StockBasedCompensationandStockholdersEquityAssumptionsUsedInBlackScholesModelDetails" roleURI="http://8x8.com/role/StockBasedCompensationandStockholdersEquityAssumptionsUsedInBlackScholesModelDetails">
        <link:definition>9955561 - Disclosure - Stock-Based Compensation and Stockholders' Equity - Assumptions Used In Black-Scholes Model (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDomesticandForeignIncomefromContinuingOperationsDetails" roleURI="http://8x8.com/role/IncomeTaxesDomesticandForeignIncomefromContinuingOperationsDetails">
        <link:definition>9955562 - Disclosure - Income Taxes - Domestic and Foreign Income from Continuing Operations (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesNarrativeDetails" roleURI="http://8x8.com/role/IncomeTaxesNarrativeDetails">
        <link:definition>9955563 - Disclosure - Income Taxes - Narrative (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncomeTaxProvisionDetails" roleURI="http://8x8.com/role/IncomeTaxesIncomeTaxProvisionDetails">
        <link:definition>9955564 - Disclosure - Income Taxes - Income Tax Provision (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails" roleURI="http://8x8.com/role/IncomeTaxesDeferredTaxAssetsandLiabilitiesDetails">
        <link:definition>9955565 - Disclosure - Income Taxes - Deferred Tax Assets and Liabilities (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesReconciliationofProvisionforIncomeTaxesDetails" roleURI="http://8x8.com/role/IncomeTaxesReconciliationofProvisionforIncomeTaxesDetails">
        <link:definition>9955566 - Disclosure - Income Taxes - Reconciliation of Provision for Income Taxes (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesReconciliationofTaxesProvidedtoFederalStatutoryRateDetails" roleURI="http://8x8.com/role/IncomeTaxesReconciliationofTaxesProvidedtoFederalStatutoryRateDetails">
        <link:definition>9955567 - Disclosure - Income Taxes - Reconciliation of Taxes Provided to Federal Statutory Rate (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesIncomeTaxesPaidDetails" roleURI="http://8x8.com/role/IncomeTaxesIncomeTaxesPaidDetails">
        <link:definition>9955568 - Disclosure - Income Taxes - Income Taxes Paid (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="IncomeTaxesUnrecognizedTaxBenefitsDetails" roleURI="http://8x8.com/role/IncomeTaxesUnrecognizedTaxBenefitsDetails">
        <link:definition>9955569 - Disclosure - Income Taxes - Unrecognized Tax Benefits (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerShareScheduleofBasicandDilutedNetLossPerShareDetails" roleURI="http://8x8.com/role/NetIncomeLossPerShareScheduleofBasicandDilutedNetLossPerShareDetails">
        <link:definition>9955570 - Disclosure - Net Income (Loss) Per Share - Schedule of Basic and Diluted Net Loss Per Share (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="NetIncomeLossPerShareScheduleofAntidilutiveAwardsDetails" roleURI="http://8x8.com/role/NetIncomeLossPerShareScheduleofAntidilutiveAwardsDetails">
        <link:definition>9955571 - Disclosure - Net Income (Loss) Per Share - Schedule of Antidilutive Awards (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="RelatedPartyTransactionsDetails" roleURI="http://8x8.com/role/RelatedPartyTransactionsDetails">
        <link:definition>9955572 - Disclosure - Related Party Transactions (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
      <link:roleType id="SubsequentEventDetails" roleURI="http://8x8.com/role/SubsequentEventDetails">
        <link:definition>9955573 - Disclosure - Subsequent Event (Details)</link:definition>
        <link:usedOn>link:presentationLink</link:usedOn>
        <link:usedOn>link:calculationLink</link:usedOn>
        <link:usedOn>link:definitionLink</link:usedOn>
      </link:roleType>
    </xs:appinfo>
  </xs:annotation>
  <xs:element id="eght_AuditInformationAbstract" abstract="true" name="AuditInformationAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="eght_AmortizationOfDeferredContractAcquisitionCosts" abstract="false" name="AmortizationOfDeferredContractAcquisitionCosts" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_IncreaseDecreaseInCapitalizedContractCost" abstract="false" name="IncreaseDecreaseInCapitalizedContractCost" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_RepaymentOfPrincipalTermLoan" abstract="false" name="RepaymentOfPrincipalTermLoan" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_IssuanceOfCommonStockForBusinessCombinations" abstract="false" name="IssuanceOfCommonStockForBusinessCombinations" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_WarrantLiabilitiesPolicyTextBlock" abstract="false" name="WarrantLiabilitiesPolicyTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="eght_ScheduleOfDebtRepaymentsTableTextBlock" abstract="false" name="ScheduleOfDebtRepaymentsTableTextBlock" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:textBlockItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_ConvertibleSeniorNotes2024Member" abstract="true" name="ConvertibleSeniorNotes2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_StrategicTelecommunicationCompanyMember" abstract="true" name="StrategicTelecommunicationCompanyMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_PaymentsToAcquireBusinessesNetCashOutflow" abstract="false" name="PaymentsToAcquireBusinessesNetCashOutflow" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanDurationOfPurchasePeriod" abstract="false" name="EmployeeStockPurchasePlanDurationOfPurchasePeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanDurationOfOfferingPeriod" abstract="false" name="EmployeeStockPurchasePlanDurationOfOfferingPeriod" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="eght_ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsRatePerYear" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAwardVestingRightsRatePerYear" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:pureItemType"/>
  <xs:element id="eght_PaymentsToAcquireBusinessCash" abstract="false" name="PaymentsToAcquireBusinessCash" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_BusinessCombinationConsiderationTransferredAccruedHoldback" abstract="false" name="BusinessCombinationConsiderationTransferredAccruedHoldback" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_CapitalizedInternalUseSoftwareMember" abstract="true" name="CapitalizedInternalUseSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_ServiceRevenueMember" abstract="true" name="ServiceRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_SubscriptionRevenueMember" abstract="true" name="SubscriptionRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_PlatformUsageRevenueMember" abstract="true" name="PlatformUsageRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_OtherRevenueMember" abstract="true" name="OtherRevenueMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_RevenueSubscriptionTerm" abstract="false" name="RevenueSubscriptionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="eght_RestrictedCashMember" abstract="true" name="RestrictedCashMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_CashCashEquivalentsAndDebtSecuritiesAvailableForSale" abstract="false" name="CashCashEquivalentsAndDebtSecuritiesAvailableForSale" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_ConvertibleNotes2028Member" abstract="true" name="ConvertibleNotes2028Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_TradeAccountsReceivableCurrent" abstract="false" name="TradeAccountsReceivableCurrent" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_AccountsReceivableAllowanceForCreditLossProvisionAdjustment" abstract="false" name="AccountsReceivableAllowanceForCreditLossProvisionAdjustment" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_InternalUseSoftwareMember" abstract="true" name="InternalUseSoftwareMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_AcquiredIntangiblesAssetsMember" abstract="true" name="AcquiredIntangiblesAssetsMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_IntangibleAssetsFullyAmortizedWrittenOff" abstract="false" name="IntangibleAssetsFullyAmortizedWrittenOff" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveAndThereafter" abstract="false" name="FiniteLivedIntangibleAssetsAmortizationExpenseYearFiveAndThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_HostingServiceContractMember" abstract="true" name="HostingServiceContractMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_StateAndLocalTaxesAndSurchargesMember" abstract="true" name="StateAndLocalTaxesAndSurchargesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_A2022TermLoanMember" abstract="true" name="A2022TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_ConvertibleNotes2024Member" abstract="true" name="ConvertibleNotes2024Member" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_DelayedDrawTermLoanFacilityMember" abstract="true" name="DelayedDrawTermLoanFacilityMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_DebtCovenantAxis" abstract="true" name="DebtCovenantAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="eght_DebtCovenantDomain" abstract="true" name="DebtCovenantDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_MarginOneMember" abstract="true" name="MarginOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_MarginTwoMember" abstract="true" name="MarginTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_MarginThreeMember" abstract="true" name="MarginThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_LongTermDebtAdditionalQuarterlyPaymentAmount" abstract="false" name="LongTermDebtAdditionalQuarterlyPaymentAmount" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_DebtPeriodicPaymentAxis" abstract="true" name="DebtPeriodicPaymentAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="eght_DebtPeriodicPaymentDomain" abstract="true" name="DebtPeriodicPaymentDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_PeriodicPaymentOneMember" abstract="true" name="PeriodicPaymentOneMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_PeriodicPaymentTwoMember" abstract="true" name="PeriodicPaymentTwoMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_PeriodicPaymentThreeMember" abstract="true" name="PeriodicPaymentThreeMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_DebtInstrumentRepurchased" abstract="false" name="DebtInstrumentRepurchased" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:integerItemType"/>
  <xs:element id="eght_CommonStockConversionRate" abstract="false" name="CommonStockConversionRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="eght_DebtInstrumentBasisSpreadOnVariableFloorRate" abstract="false" name="DebtInstrumentBasisSpreadOnVariableFloorRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_DebtInstrumentCreditSpreadAdjustmentOnVariableRate" abstract="false" name="DebtInstrumentCreditSpreadAdjustmentOnVariableRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_WarrantsAndRightsOutstandingPercentageOfPremiumOverClosingPrice" abstract="false" name="WarrantsAndRightsOutstandingPercentageOfPremiumOverClosingPrice" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_ExchangeTransactionMember" abstract="true" name="ExchangeTransactionMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_MeasurementPeriodAxis" abstract="true" name="MeasurementPeriodAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="eght_MeasurementPeriodDomain" abstract="true" name="MeasurementPeriodDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_InitialFocusPeriodMember" abstract="true" name="InitialFocusPeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_MeasurementPeriodMember" abstract="true" name="MeasurementPeriodMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_DebtInstrumentDebtDiscountAndIssuanceCostsPaidInCommonStock" abstract="false" name="DebtInstrumentDebtDiscountAndIssuanceCostsPaidInCommonStock" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_ProceedsFromDebtNetOfIssuanceCostsCashConsideration" abstract="false" name="ProceedsFromDebtNetOfIssuanceCostsCashConsideration" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_DebtIssuanceCostsPercentagePaidInCommonStock" abstract="false" name="DebtIssuanceCostsPercentagePaidInCommonStock" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_DebtInstrumentMinimumPercentageHeldInConvertibleNotes" abstract="false" name="DebtInstrumentMinimumPercentageHeldInConvertibleNotes" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_A2017PlanMember" abstract="true" name="A2017PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_A2022EquityIncentivePlanMember" abstract="true" name="A2022EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_A2012PlanMember" abstract="true" name="A2012PlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_A2017NewEmployeeInducementIncentivePlanMember" abstract="true" name="A2017NewEmployeeInducementIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_A2022RepurchasePlanMember" abstract="true" name="A2022RepurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_ShareBasedPaymentArrangementByShareBasedCompensationAwardRevenueTarget" abstract="false" name="ShareBasedPaymentArrangementByShareBasedCompensationAwardRevenueTarget" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledInPeriodFairValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsCancelledInPeriodFairValue" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanTermOfExtension" abstract="false" name="EmployeeStockPurchasePlanTermOfExtension" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="eght_ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualIncreaseInSharesAvailableForIssuance" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardAnnualIncreaseInSharesAvailableForIssuance" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanPercentageOfMarketValuePriceOfCommonStock" abstract="false" name="EmployeeStockPurchasePlanPercentageOfMarketValuePriceOfCommonStock" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanMaximumContributionOfEmployeesBaseCompensation" abstract="false" name="EmployeeStockPurchasePlanMaximumContributionOfEmployeesBaseCompensation" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesValue" abstract="false" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardMaximumNumberOfSharesValue" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_OperatingLossCarryforwardsSubjectToExpiration" abstract="false" name="OperatingLossCarryforwardsSubjectToExpiration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_OperatingLossCarryforwardsNotSubjectExpiration" abstract="false" name="OperatingLossCarryforwardsNotSubjectExpiration" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_DeferredTaxAssetsLeaseLiability" abstract="false" name="DeferredTaxAssetsLeaseLiability" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_DeferredTaxAssetsCapitalizedIRC174Costs" abstract="false" name="DeferredTaxAssetsCapitalizedIRC174Costs" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_DeferredTaxLiabilitiesRightOfUseAsset" abstract="false" name="DeferredTaxLiabilitiesRightOfUseAsset" nillable="true" xbrli:periodType="instant" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessTaxBenefitOnStockAwardAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessTaxBenefitOnStockAwardAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EffectiveIncomeTaxRateReconciliationForeignExchangeGainsLossesAmount" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignExchangeGainsLossesAmount" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessTaxBenefitOnStockAwardPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseExcessTaxBenefitOnStockAwardPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationNondeductibleExpenseSection162mLimitationPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_EffectiveIncomeTaxRateReconciliationForeignExchangeGainsLossesPercent" abstract="false" name="EffectiveIncomeTaxRateReconciliationForeignExchangeGainsLossesPercent" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:percentItemType"/>
  <xs:element id="eght_UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromOther" abstract="false" name="UnrecognizedTaxBenefitsIncreaseDecreaseResultingFromOther" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_EarningsPerShareBasicAndDilutedEPSAbstract" abstract="true" name="EarningsPerShareBasicAndDilutedEPSAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="eght_RestrictedStockUnitsAndPerformanceSharesMember" abstract="true" name="RestrictedStockUnitsAndPerformanceSharesMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_SharesIssuedUnderEmployeeStockPurchasePlanMember" abstract="true" name="SharesIssuedUnderEmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_RelatedPartyTransactionContractualTerm" abstract="false" name="RelatedPartyTransactionContractualTerm" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="eght_RelatedPartyTransactionContractValue" abstract="false" name="RelatedPartyTransactionContractValue" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_RelatedPartyTransactionAmountPaid" abstract="false" name="RelatedPartyTransactionAmountPaid" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_DebtInstrumentPeriodicPaymentShortTermPrincipal" abstract="false" name="DebtInstrumentPeriodicPaymentShortTermPrincipal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
</xs:schema>
