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<!-- DFIN ActiveDisclosure(SM) XBRL Schema Document - http://www.dfinsolutions.com/ -->
<!-- Creation Date      : 2022-03-10T21:21:21.9699908+00:00 -->
<!-- Version            : 5.0.1.728 -->
<!-- Package ID         : 1eacc53e041845b1b08aea8f38b45072 -->
<!-- Copyright (c) 2022 Donnelley Financial Solutions, Inc. All Rights Reserved. -->
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  <xsd:element id="dsp_IssuanceOfConvertiblePreferredUnitsToRelatedParty" name="IssuanceOfConvertiblePreferredUnitsToRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_DeemedDividendRelatedToBeneficialConversionFeatureOnConvertiblePreferredUnits" name="DeemedDividendRelatedToBeneficialConversionFeatureOnConvertiblePreferredUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_AdjustmentsToAdditionalPaidInCapitalAccruedMemberTaxDistributions" name="AdjustmentsToAdditionalPaidInCapitalAccruedMemberTaxDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_NetIncomeLossPriorToReorganizationTransactions" name="NetIncomeLossPriorToReorganizationTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_TemporaryEquityShareEffectOfReorganizationTransactions" name="TemporaryEquityShareEffectOfReorganizationTransactions" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TemporaryEquityValueEffectOfReorganizationTransactions" name="TemporaryEquityValueEffectOfReorganizationTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_StockIssuedDuringPeriodValueEffectOfReorganizationTransactions" name="StockIssuedDuringPeriodValueEffectOfReorganizationTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_StockIssuedDuringPeriodShareEffectOfReorganizationTransactions" name="StockIssuedDuringPeriodShareEffectOfReorganizationTransactions" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_NumberOfClassACommonSharesIssuedAndNumberOfSharesConvertedFromClassBCommonStockToClassACommonStockDuringPeriodIncludingThoseRelatedToReorganizationTransactionsAndInitialPublicOffering" name="NumberOfClassACommonSharesIssuedAndNumberOfSharesConvertedFromClassBCommonStockToClassACommonStockDuringPeriodIncludingThoseRelatedToReorganizationTransactionsAndInitialPublicOffering" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_StockIssuedDuringPeriodValueAllocationOfEquityToNonControllingInterests" name="StockIssuedDuringPeriodValueAllocationOfEquityToNonControllingInterests" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_NetIncomeLossSubsequentToReorganizationTransactions" name="NetIncomeLossSubsequentToReorganizationTransactions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_MembersEquityMember" name="MembersEquityMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_IncreaseDecreaseInAccruedCompensation" name="IncreaseDecreaseInAccruedCompensation" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_ProceedsFromPaycheckProtectionProgramLoan" name="ProceedsFromPaycheckProtectionProgramLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_ProceedsFromIssuanceOfConvertiblePreferredUnitsToRelatedParty" name="ProceedsFromIssuanceOfConvertiblePreferredUnitsToRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_PaymentOfTransactionCostsBehalfOfRelatedParty" name="PaymentOfTransactionCostsBehalfOfRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_PaymentOfMemberTaxDistributions" name="PaymentOfMemberTaxDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_ForgivenessOfLongTermDebtAndAccruedInterestByRelatedParty" name="ForgivenessOfLongTermDebtAndAccruedInterestByRelatedParty" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_AccruedMemberTaxDistributions" name="AccruedMemberTaxDistributions" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_NoncashGainOnExtinguishmentOfDebtRelatedToPPPLoan" name="NoncashGainOnExtinguishmentOfDebtRelatedToPPPLoan" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesAbstract" name="BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ConvertiblePreferredUnitsAndCommonUnitsTextBlock" name="ConvertiblePreferredUnitsAndCommonUnitsTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ConvertiblePreferredUnitsAndCommonUnitsAbstract" name="ConvertiblePreferredUnitsAndCommonUnitsAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_GuaranteesAndIndemnitiesTextBlock" name="GuaranteesAndIndemnitiesTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_GuaranteesAndIndemnitiesAbstract" name="GuaranteesAndIndemnitiesAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_BasisOfPresentationAndPrinciplesOfConsolidationPolicyTextBlock" name="BasisOfPresentationAndPrinciplesOfConsolidationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_UnitBasedCompensationPolicyTextBlock" name="UnitBasedCompensationPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_EarningsLossPerUnitPolicyTextBlock" name="EarningsLossPerUnitPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_PaycheckProtectionProgramLoanPolicyTextBlock" name="PaycheckProtectionProgramLoanPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_RelatedPartyRelationshipsPolicyTextBlock" name="RelatedPartyRelationshipsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TaxReceivableAgreementPolicyTextBlock" name="TaxReceivableAgreementPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TreasuryStockPolicyTextBlock" name="TreasuryStockPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_RecentAdoptedAccountingPronouncementsPolicyTextBlock" name="RecentAdoptedAccountingPronouncementsPolicyTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_AdvertisingAgencyRiskMember" name="AdvertisingAgencyRiskMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ScheduleOfPropertyPlantAndEquipmentEstimatedUsefulLifeTableTextBlock" name="ScheduleOfPropertyPlantAndEquipmentEstimatedUsefulLifeTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ScheduleOfDepreciationExpenseTableTextBlock" name="ScheduleOfDepreciationExpenseTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ScheduleOfInterestCostTableTextBlock" name="ScheduleOfInterestCostTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_IncentiveUnitsMember" name="IncentiveUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_NonqualifiedStockOptionsMember" name="NonqualifiedStockOptionsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ScheduleOfNoncontrollingOwnershipInterestsTableTextBlock" name="ScheduleOfNoncontrollingOwnershipInterestsTableTextBlock" type="dtr-types:textBlockItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_NatureOfOperationsLineItems" name="NatureOfOperationsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_NatureOfOperationsTable" name="NatureOfOperationsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ContinuingMembersClassBUnitsMember" name="ContinuingMembersClassBUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ViantTechnologyLLCMember" name="ViantTechnologyLLCMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_MembersEquityClassAUnitsMember" name="MembersEquityClassAUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_CommonStockSharesIssuedForEachMembershipUnit" name="CommonStockSharesIssuedForEachMembershipUnit" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ContinuingMembersUnitsExchangeDescription" name="ContinuingMembersUnitsExchangeDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_PaymentsToAcquireMemberUnits" name="PaymentsToAcquireMemberUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_MembersEquityUnitsAcquiredDuringPeriod" name="MembersEquityUnitsAcquiredDuringPeriod" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_StockIssuedDuringPeriodSharesUnderwritesOptionsExercised" name="StockIssuedDuringPeriodSharesUnderwritesOptionsExercised" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_MembersEquityUnitsReceivedDuringPeriodConversionOfUnits" name="MembersEquityUnitsReceivedDuringPeriodConversionOfUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_CommonStockVotingRightsPercentage" name="CommonStockVotingRightsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_PercentageOfVotingRightsOfOutstandingCommonStock" name="PercentageOfVotingRightsOfOutstandingCommonStock" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems" name="BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable" name="BasisOfPresentationAndSummaryOfSignificantAccountingPoliciesTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_PaycheckProtectionProgramLoanMember" name="PaycheckProtectionProgramLoanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_CustomerOneMember" name="CustomerOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_CustomerTwoMember" name="CustomerTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_SupplierOneMember" name="SupplierOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_SupplierTwoMember" name="SupplierTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_SupplierThreeMember" name="SupplierThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_AccountsPayableAndAccruedLiabilitiesCurrentMember" name="AccountsPayableAndAccruedLiabilitiesCurrentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_SecuredOvernightFinancingRateSOFRMember" name="SecuredOvernightFinancingRateSOFRMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialPublicOfferingLockUpPeriod" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardInitialPublicOfferingLockUpPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_VestingDescription" name="VestingDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_CapitalizedSoftwareDevelopmentCostsMember" name="CapitalizedSoftwareDevelopmentCostsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_FurnitureFixturesAndOfficeEquipmentMember" name="FurnitureFixturesAndOfficeEquipmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_NumberOfCustomer" name="NumberOfCustomer" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ThresholdPercentageOfConsolidatedAccountsReceivable" name="ThresholdPercentageOfConsolidatedAccountsReceivable" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_AdvertisingAgencyOneMember" name="AdvertisingAgencyOneMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_AdvertisingAgencyTwoMember" name="AdvertisingAgencyTwoMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_AdvertisingAgencyThreeMember" name="AdvertisingAgencyThreeMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_NumberOfSupplier" name="NumberOfSupplier" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dsp_TaxReceivableAgreementRequiredToMakePaymentsToShareholdersRealizedPercentageOfTaxBenefitsInEventThatExchangeOfUnitsToShares" name="TaxReceivableAgreementRequiredToMakePaymentsToShareholdersRealizedPercentageOfTaxBenefitsInEventThatExchangeOfUnitsToShares" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TaxReceivableAgreementExpectedRemainingTaxBenefitPercentage" name="TaxReceivableAgreementExpectedRemainingTaxBenefitPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TaxReceivableAgreementInterestPaymentsAccruedBasisSpreadRate" name="TaxReceivableAgreementInterestPaymentsAccruedBasisSpreadRate" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ContractWithCustomerLiabilityDeferralOfRevenue" name="ContractWithCustomerLiabilityDeferralOfRevenue" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_PlatformOperationsMember" name="PlatformOperationsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_TechnologyAndDevelopmentMember" name="TechnologyAndDevelopmentMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_PropertyPlantAndEquipmentAmountChargedToExpenses" name="PropertyPlantAndEquipmentAmountChargedToExpenses" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_PropertyEquipmentAndSoftwareInterestsCapitalizationAmount" name="PropertyEquipmentAndSoftwareInterestsCapitalizationAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_AdelphicMember" name="AdelphicMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_AccruedTrafficAcquisitionCosts" name="AccruedTrafficAcquisitionCosts" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_StakeholderPercentage" name="StakeholderPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_AccruedInterestPercentage" name="AccruedInterestPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_SecuredLoanAgreementMember" name="SecuredLoanAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_TwoThousandNineteenFormerHoldcoTransactionMember" name="TwoThousandNineteenFormerHoldcoTransactionMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_PNCBankMember" name="PNCBankMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_LoanAgreementMember" name="LoanAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_AccruedInterestForgivenessMember" name="AccruedInterestForgivenessMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ProfessionalServiceFee" name="ProfessionalServiceFee" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_CashGeneratedFromExecutionLineOfCreditFacility" name="CashGeneratedFromExecutionLineOfCreditFacility" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_PercentageOutstandingConvertiblePreferredUnits" name="PercentageOutstandingConvertiblePreferredUnits" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_OutstandingPrincipalAndAccruedInterest" name="OutstandingPrincipalAndAccruedInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_LineOfCreditFacilityForgiveness" name="LineOfCreditFacilityForgiveness" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_ConvertiblePreferredUnitsAndCommonUnitsLineItems" name="ConvertiblePreferredUnitsAndCommonUnitsLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ConvertiblePreferredUnitsAndCommonUnitsTable" name="ConvertiblePreferredUnitsAndCommonUnitsTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_UnitRepurchaseAgreementMember" name="UnitRepurchaseAgreementMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_TwoThousandSixteenConvertiblePreferredUnitsMember" name="TwoThousandSixteenConvertiblePreferredUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_FormerHoldcosMember" name="FormerHoldcosMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_FourBrothers2LimitedLiabilityCompanyMember" name="FourBrothers2LimitedLiabilityCompanyMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_PreferredUnitholdersMember" name="PreferredUnitholdersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_CommonUnitholdersMember" name="CommonUnitholdersMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_TemporaryEquityLiquidationPreferenceCalculatedPercentage" name="TemporaryEquityLiquidationPreferenceCalculatedPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TemporaryEquityLiquidationPreferenceCalculatedDescription" name="TemporaryEquityLiquidationPreferenceCalculatedDescription" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_TemporaryEquityStatedValuePerPreferredUnitPlusAccruedReturn" name="TemporaryEquityStatedValuePerPreferredUnitPlusAccruedReturn" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dsp_PreferredStockConvertibleEffectiveConversionPrice" name="PreferredStockConvertibleEffectiveConversionPrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dsp_FairValueOfCommonUnitsPercentage" name="FairValueOfCommonUnitsPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_HistoricalVolatilityTimePeriod" name="HistoricalVolatilityTimePeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_DebtSecuritiesYieldPeriod" name="DebtSecuritiesYieldPeriod" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_EquitySecuritiesFvNiMeasurementInputExpectedTerm" name="EquitySecuritiesFvNiMeasurementInputExpectedTerm" type="xbrli:durationItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_PhantomUnitPlanMember" name="PhantomUnitPlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_TwoThousandAndTwentyOneLongTermIncentivePlanMember" name="TwoThousandAndTwentyOneLongTermIncentivePlanMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageExercisePrice" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsVestedInPeriodWeightedAverageExercisePrice" type="dtr-types:perShareItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsNumberOfForfeitedUnitsReallocatedToExecutiveDirectors" name="ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsNumberOfForfeitedUnitsReallocatedToExecutiveDirectors" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_NumberOfExecutiveDirectors" name="NumberOfExecutiveDirectors" type="xbrli:integerItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_PercentageOfWeightToValuationApproachOfIncentiveUnitAwards" name="PercentageOfWeightToValuationApproachOfIncentiveUnitAwards" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ShareBasedCompensationArrangementByShareBasedPaymentAwardDistributionThresholdAmount" name="ShareBasedCompensationArrangementByShareBasedPaymentAwardDistributionThresholdAmount" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_AnnualIncreasePercentageOfSharesReservedForIssuance" name="AnnualIncreasePercentageOfSharesReservedForIssuance" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_PercentageOfExclusiveOfNonControllingInterestDueToIncomeTaxExpenseBenefitNotRecognizeOnShareOfPreTaxBookIncomeLoss" name="PercentageOfExclusiveOfNonControllingInterestDueToIncomeTaxExpenseBenefitNotRecognizeOnShareOfPreTaxBookIncomeLoss" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_IncomeTaxDisclosureLineItems" name="IncomeTaxDisclosureLineItems" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_IncomeTaxDisclosureTable" name="IncomeTaxDisclosureTable" type="xbrli:stringItemType" substitutionGroup="xbrldt:hypercubeItem" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_EffectiveIncomeTaxRateReconciliationPermanentItems" name="EffectiveIncomeTaxRateReconciliationPermanentItems" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_NetOperatingLossBeginToExpire" name="NetOperatingLossBeginToExpire" type="xbrli:gYearItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_DeemedContributionOfConvertiblePreferredUnitInterest" name="DeemedContributionOfConvertiblePreferredUnitInterest" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_DeemedDividendUponIssuanceOfConvertiblePreferredUnits" name="DeemedDividendUponIssuanceOfConvertiblePreferredUnits" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_AdjustedNetIncomeLossAttributableToAllUnitholders" name="AdjustedNetIncomeLossAttributableToAllUnitholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_AdjustedNetIncomeLossAttributableToCommonUnitholders" name="AdjustedNetIncomeLossAttributableToCommonUnitholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_UndistributedEarningsLossAttributableToAllUnitholders" name="UndistributedEarningsLossAttributableToAllUnitholders" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_IncentiveCommonUnits" name="IncentiveCommonUnits" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_AntidilutiveSecuritiesExcludedFromEarningsLossPerShareAbstract" name="AntidilutiveSecuritiesExcludedFromEarningsLossPerShareAbstract" type="xbrli:stringItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_ExchangeUnitsForSharesOfCommonStock" name="ExchangeUnitsForSharesOfCommonStock" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_MembersEquityClassBUnitsMember" name="MembersEquityClassBUnitsMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_NumberOfUnitsOwned" name="NumberOfUnitsOwned" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_ViantTechnologyIncMember" name="ViantTechnologyIncMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
  <xsd:element id="dsp_EconomicInterestsOwnershipPercentage" name="EconomicInterestsOwnershipPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dsp_OwnershipInterestPercentage" name="OwnershipInterestPercentage" type="dtr-types:percentItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" />
  <xsd:element id="dsp_NoncontrollingInterestsNumberOfSharesExchanged" name="NoncontrollingInterestsNumberOfSharesExchanged" type="xbrli:sharesItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" />
  <xsd:element id="dsp_LesseeOperatingLeaseLiabilityPaymentsDueYearFiveAndThereafter" name="LesseeOperatingLeaseLiabilityPaymentsDueYearFiveAndThereafter" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="instant" nillable="true" abstract="false" xbrli:balance="credit" />
  <xsd:element id="dsp_PurchasesFromRelatedParties" name="PurchasesFromRelatedParties" type="xbrli:monetaryItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="false" xbrli:balance="debit" />
  <xsd:element id="dsp_MeredithCorporationMember" name="MeredithCorporationMember" type="dtr-types:domainItemType" substitutionGroup="xbrli:item" xbrli:periodType="duration" nillable="true" abstract="true" />
</xsd:schema>
