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

<!--XBRL Document Created with the Workiva Platform-->
<!--Copyright 2024 Workiva-->
<!--r:7abf633f-dd1d-4be2-bdec-9d8e18a07325,g:6e928fc4-e843-49c7-ae1f-ee2c874c54d3-->
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:link="http://www.xbrl.org/2003/linkbase" xmlns:eght="http://8x8.com/20240630" xmlns:xbrli="http://www.xbrl.org/2003/instance" xmlns:dtr-types="http://www.xbrl.org/dtr/type/2022-03-31" xmlns:dtr-types1="http://www.xbrl.org/dtr/type/2020-01-21" xmlns:xbrldt="http://xbrl.org/2005/xbrldt" attributeFormDefault="unqualified" elementFormDefault="qualified" targetNamespace="http://8x8.com/20240630">
  <xs:import namespace="http://fasb.org/srt/2024" schemaLocation="https://xbrl.fasb.org/srt/2024/elts/srt-2024.xsd"/>
  <xs:import namespace="http://fasb.org/us-gaap/2024" schemaLocation="https://xbrl.fasb.org/us-gaap/2024/elts/us-gaap-2024.xsd"/>
  <xs:import namespace="http://www.w3.org/1999/xlink" schemaLocation="http://www.xbrl.org/2003/xlink-2003-12-31.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/2020-01-21" schemaLocation="https://www.xbrl.org/dtr/type/2020-01-21/types.xsd"/>
  <xs:import namespace="http://www.xbrl.org/dtr/type/2022-03-31" schemaLocation="https://www.xbrl.org/dtr/type/2022-03-31/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/2024" schemaLocation="https://xbrl.sec.gov/country/2024/country-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/dei/2024" schemaLocation="https://xbrl.sec.gov/dei/2024/dei-2024.xsd"/>
  <xs:import namespace="http://xbrl.sec.gov/ecd/2024" schemaLocation="https://xbrl.sec.gov/ecd/2024/ecd-2024.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-20240630_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-20240630_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-20240630_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-20240630_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="CONDENSEDCONSOLIDATEDBALANCESHEETS" roleURI="http://8x8.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETS">
        <link:definition>9952151 - Statement - CONDENSED 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="CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical" roleURI="http://8x8.com/role/CONDENSEDCONSOLIDATEDBALANCESHEETSParenthetical">
        <link:definition>9952152 - Statement - CONDENSED 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="CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS" roleURI="http://8x8.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFOPERATIONS">
        <link:definition>9952153 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS</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="CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS" roleURI="http://8x8.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCOMPREHENSIVELOSS">
        <link:definition>9952154 - Statement - CONDENSED CONSOLIDATED STATEMENTS OF 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="CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY" roleURI="http://8x8.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFSTOCKHOLDERSEQUITY">
        <link:definition>9952155 - Statement - CONDENSED 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="CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS" roleURI="http://8x8.com/role/CONDENSEDCONSOLIDATEDSTATEMENTSOFCASHFLOWS">
        <link:definition>9952156 - Statement - CONDENSED 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>9952157 - 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="REVENUERECOGNITION" roleURI="http://8x8.com/role/REVENUERECOGNITION">
        <link:definition>9952158 - Disclosure - REVENUE RECOGNITION</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>9952159 - 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>9952160 - 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>9952161 - 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>9952162 - 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>9952163 - 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>9952164 - 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>9952165 - 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>9952166 - 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="NETLOSSPERSHARE" roleURI="http://8x8.com/role/NETLOSSPERSHARE">
        <link:definition>9952167 - Disclosure - NET 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="GEOGRAPHICALINFORMATION" roleURI="http://8x8.com/role/GEOGRAPHICALINFORMATION">
        <link:definition>9952168 - Disclosure - GEOGRAPHICAL 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="RELATEDPARTYTRANSACTIONS" roleURI="http://8x8.com/role/RELATEDPARTYTRANSACTIONS">
        <link:definition>9952169 - 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="SUBSEQUENTEVENTS" roleURI="http://8x8.com/role/SUBSEQUENTEVENTS">
        <link:definition>9952170 - Disclosure - SUBSEQUENT EVENTS</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>9954471 - 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="REVENUERECOGNITIONTables" roleURI="http://8x8.com/role/REVENUERECOGNITIONTables">
        <link:definition>9954472 - Disclosure - REVENUE RECOGNITION (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>9954473 - 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>9954474 - 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>9954475 - 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>9954476 - 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>9954477 - 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>9954478 - 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="NETLOSSPERSHARETables" roleURI="http://8x8.com/role/NETLOSSPERSHARETables">
        <link:definition>9954479 - Disclosure - NET 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="GEOGRAPHICALINFORMATIONTables" roleURI="http://8x8.com/role/GEOGRAPHICALINFORMATIONTables">
        <link:definition>9954480 - Disclosure - GEOGRAPHICAL INFORMATION (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="THECOMPANYANDSIGNIFICANTACCOUNTINGPOLICIESDetails" roleURI="http://8x8.com/role/THECOMPANYANDSIGNIFICANTACCOUNTINGPOLICIESDetails">
        <link:definition>9954481 - Disclosure - THE COMPANY AND SIGNIFICANT ACCOUNTING POLICIES (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="REVENUERECOGNITIONContractBalancesDetails" roleURI="http://8x8.com/role/REVENUERECOGNITIONContractBalancesDetails">
        <link:definition>9954482 - Disclosure - REVENUE RECOGNITION - 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="REVENUERECOGNITIONNarrativeDetails" roleURI="http://8x8.com/role/REVENUERECOGNITIONNarrativeDetails">
        <link:definition>9954483 - Disclosure - REVENUE RECOGNITION - 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="REVENUERECOGNITIONNarrativeDetails_1" roleURI="http://8x8.com/role/REVENUERECOGNITIONNarrativeDetails_1">
        <link:definition>9954483 - Disclosure - REVENUE RECOGNITION - 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="FAIRVALUEMEASUREMENTSCashCashEquivalentsandInvestmentswithHierarchyDetails" roleURI="http://8x8.com/role/FAIRVALUEMEASUREMENTSCashCashEquivalentsandInvestmentswithHierarchyDetails">
        <link:definition>9954484 - 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="FAIRVALUEMEASUREMENTSCashCashEquivalentsandInvestmentswithHierarchyDetails_1" roleURI="http://8x8.com/role/FAIRVALUEMEASUREMENTSCashCashEquivalentsandInvestmentswithHierarchyDetails_1">
        <link:definition>9954484 - 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="FAIRVALUEMEASUREMENTSSummaryofAssumptionsUsedinDeterminationofFairValueDetails" roleURI="http://8x8.com/role/FAIRVALUEMEASUREMENTSSummaryofAssumptionsUsedinDeterminationofFairValueDetails">
        <link:definition>9954485 - Disclosure - FAIR VALUE MEASUREMENTS - Summary 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="FAIRVALUEMEASUREMENTSNarrativeDetails" roleURI="http://8x8.com/role/FAIRVALUEMEASUREMENTSNarrativeDetails">
        <link:definition>9954486 - 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="FINANCIALSTATEMENTCOMPONENTSScheduleofAccountsReceivableDetails" roleURI="http://8x8.com/role/FINANCIALSTATEMENTCOMPONENTSScheduleofAccountsReceivableDetails">
        <link:definition>9954487 - 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>9954488 - 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="FINANCIALSTATEMENTCOMPONENTSScheduleofOtherCurrentAssetsDetails" roleURI="http://8x8.com/role/FINANCIALSTATEMENTCOMPONENTSScheduleofOtherCurrentAssetsDetails">
        <link:definition>9954489 - 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>9954490 - 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="INTANGIBLEASSETSANDGOODWILLScheduleOfIntangiblesDetails" roleURI="http://8x8.com/role/INTANGIBLEASSETSANDGOODWILLScheduleOfIntangiblesDetails">
        <link:definition>9954491 - 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>9954492 - 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>9954493 - 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>9954494 - 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>9954495 - 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>9954496 - 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>9954497 - 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="LEASESNarrativeDetails" roleURI="http://8x8.com/role/LEASESNarrativeDetails">
        <link:definition>9954498 - 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="LEASESMaturityofLeaseLiabilitiesDetails" roleURI="http://8x8.com/role/LEASESMaturityofLeaseLiabilitiesDetails">
        <link:definition>9954499 - 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>9954499 - 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="COMMITMENTSANDCONTINGENCIESDetails" roleURI="http://8x8.com/role/COMMITMENTSANDCONTINGENCIESDetails">
        <link:definition>9954500 - 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="CONVERTIBLESENIORNOTESANDTERMLOANTermLoanandWarrantsDetails" roleURI="http://8x8.com/role/CONVERTIBLESENIORNOTESANDTERMLOANTermLoanandWarrantsDetails">
        <link:definition>9954501 - 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="CONVERTIBLESENIORNOTESANDTERMLOANCarryingAmountDetails" roleURI="http://8x8.com/role/CONVERTIBLESENIORNOTESANDTERMLOANCarryingAmountDetails">
        <link:definition>9954502 - 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="CONVERTIBLESENIORNOTESANDTERMLOANInterestExpenseDetails" roleURI="http://8x8.com/role/CONVERTIBLESENIORNOTESANDTERMLOANInterestExpenseDetails">
        <link:definition>9954503 - Disclosure - CONVERTIBLE SENIOR NOTES AND TERM LOAN - 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="CONVERTIBLESENIORNOTESANDTERMLOAN2028NotesDetails" roleURI="http://8x8.com/role/CONVERTIBLESENIORNOTESANDTERMLOAN2028NotesDetails">
        <link:definition>9954504 - Disclosure - CONVERTIBLE SENIOR NOTES AND TERM LOAN - 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="STOCKBASEDCOMPENSATIONANDSTOCKHOLDERSEQUITYNarrativeDetails" roleURI="http://8x8.com/role/STOCKBASEDCOMPENSATIONANDSTOCKHOLDERSEQUITYNarrativeDetails">
        <link:definition>9954505 - 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>9954506 - 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="STOCKBASEDCOMPENSATIONANDSTOCKHOLDERSEQUITYRestrictedStockUnitandPerformanceStockUnitActivityDetails" roleURI="http://8x8.com/role/STOCKBASEDCOMPENSATIONANDSTOCKHOLDERSEQUITYRestrictedStockUnitandPerformanceStockUnitActivityDetails">
        <link:definition>9954507 - Disclosure - STOCK-BASED COMPENSATION AND STOCKHOLDERS' EQUITY - Restricted Stock Unit and Performance 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="INCOMETAXESDetails" roleURI="http://8x8.com/role/INCOMETAXESDetails">
        <link:definition>9954508 - Disclosure - 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="NETLOSSPERSHAREBasicandDilutedNetLossPerShareDetails" roleURI="http://8x8.com/role/NETLOSSPERSHAREBasicandDilutedNetLossPerShareDetails">
        <link:definition>9954509 - Disclosure - NET LOSS PER SHARE - 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="NETLOSSPERSHAREScheduleofAntidilutiveAwardsDetails" roleURI="http://8x8.com/role/NETLOSSPERSHAREScheduleofAntidilutiveAwardsDetails">
        <link:definition>9954510 - Disclosure - NET 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="GEOGRAPHICALINFORMATIONDetails" roleURI="http://8x8.com/role/GEOGRAPHICALINFORMATIONDetails">
        <link:definition>9954511 - Disclosure - GEOGRAPHICAL 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="RELATEDPARTYTRANSACTIONSDetails" roleURI="http://8x8.com/role/RELATEDPARTYTRANSACTIONSDetails">
        <link:definition>9954512 - 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="SUBSEQUENTEVENTSDetails" roleURI="http://8x8.com/role/SUBSEQUENTEVENTSDetails">
        <link:definition>9954513 - Disclosure - SUBSEQUENT EVENTS (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_OtherExpenseIncomeNetAbstract" abstract="true" name="OtherExpenseIncomeNetAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="eght_FuzeMemberMember" abstract="true" name="FuzeMemberMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_APICShareBasedPaymentArrangementIncreaseForCostRecognitionShares" abstract="false" name="APICShareBasedPaymentArrangementIncreaseForCostRecognitionShares" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:sharesItemType"/>
  <xs:element id="eght_APICShareBasedPaymentArrangementAcquisitionIncreaseForCostRecognition" abstract="false" name="APICShareBasedPaymentArrangementAcquisitionIncreaseForCostRecognition" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_AmortizationOfDebtIssuanceCostsAndDiscountsOperatingCashFlows" abstract="false" name="AmortizationOfDebtIssuanceCostsAndDiscountsOperatingCashFlows" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" 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_PayablesForFixedAssets" abstract="false" name="PayablesForFixedAssets" nillable="true" xbrli:periodType="duration" xbrli:balance="credit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract" abstract="true" name="ReconciliationOfCashCashEquivalentsAndRestrictedCashAbstract" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:stringItemType"/>
  <xs:element id="eght_RevenueSubscriptionTerm" abstract="false" name="RevenueSubscriptionTerm" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="xbrli:durationItemType"/>
  <xs:element id="eght_TermDepositMember" abstract="true" name="TermDepositMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_RestrictedCashMember" abstract="true" name="RestrictedCashMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="eght_CashCashEquivalentsandDebtSecuritiesAvailableforsaleAmortizedCost" abstract="false" name="CashCashEquivalentsandDebtSecuritiesAvailableforsaleAmortizedCost" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <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-types1: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_AccountsReceivableAllowanceForCreditLossExpenseReversal" abstract="false" name="AccountsReceivableAllowanceForCreditLossExpenseReversal" nillable="true" xbrli:periodType="duration" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter" abstract="false" name="FiniteLivedIntangibleAssetExpectedAmortizationYearFourAndThereafter" nillable="true" xbrli:periodType="instant" xbrli:balance="debit" substitutionGroup="xbrli:item" type="xbrli:monetaryItemType"/>
  <xs:element id="eght_LesseeLeaseDescriptionAxis" abstract="true" name="LesseeLeaseDescriptionAxis" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrldt:dimensionItem" type="xbrli:stringItemType"/>
  <xs:element id="eght_LesseeLeaseDescriptionDomain" abstract="true" name="LesseeLeaseDescriptionDomain" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_SingaporeOfficeLeaseMember" abstract="true" name="SingaporeOfficeLeaseMember" 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-types1:domainItemType"/>
  <xs:element id="eght_TermLoanMember" abstract="true" name="TermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="eght_CreditAgreementMember" abstract="true" name="CreditAgreementMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="eght_EGHTTermLoanMember" abstract="true" name="EGHTTermLoanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types:domainItemType"/>
  <xs:element id="eght_DebtInstrumentBasisSpreadOnVariableFloorRate" abstract="false" name="DebtInstrumentBasisSpreadOnVariableFloorRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="eght_DebtInstrumentCreditSpreadAdjustmentOnVariableRate" abstract="false" name="DebtInstrumentCreditSpreadAdjustmentOnVariableRate" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="eght_DebtInstrumentPrepaymentFeePercentage" abstract="false" name="DebtInstrumentPrepaymentFeePercentage" nillable="true" xbrli:periodType="instant" 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-types1:percentItemType"/>
  <xs:element id="eght_DebtIssuanceCostsPercentagePaidInCommonStock" abstract="false" name="DebtIssuanceCostsPercentagePaidInCommonStock" nillable="true" xbrli:periodType="instant" substitutionGroup="xbrli:item" type="dtr-types1:percentItemType"/>
  <xs:element id="eght_A2022EquityIncentivePlanMember" abstract="true" name="A2022EquityIncentivePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <xs:element id="eght_EmployeeStockPurchasePlanMember" abstract="true" name="EmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1:domainItemType"/>
  <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-types1:domainItemType"/>
  <xs:element id="eght_SharesIssuedUnderEmployeeStockPurchasePlanMember" abstract="true" name="SharesIssuedUnderEmployeeStockPurchasePlanMember" nillable="true" xbrli:periodType="duration" substitutionGroup="xbrli:item" type="dtr-types1: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:schema>
