diff --git a/eng/common/post-build/publish-using-darc.ps1 b/eng/common/post-build/publish-using-darc.ps1
index 2427ca6b6ae..c6c38a5b45d 100644
--- a/eng/common/post-build/publish-using-darc.ps1
+++ b/eng/common/post-build/publish-using-darc.ps1
@@ -5,13 +5,8 @@ param(
   [Parameter(Mandatory=$true)][string] $MaestroToken,
   [Parameter(Mandatory=$false)][string] $MaestroApiEndPoint = 'https://maestro-prod.westus2.cloudapp.azure.com',
   [Parameter(Mandatory=$true)][string] $WaitPublishingFinish,
-  [Parameter(Mandatory=$false)][string] $EnableSourceLinkValidation,
-  [Parameter(Mandatory=$false)][string] $EnableSigningValidation,
-  [Parameter(Mandatory=$false)][string] $EnableNugetValidation,
-  [Parameter(Mandatory=$false)][string] $PublishInstallersAndChecksums,
   [Parameter(Mandatory=$false)][string] $ArtifactsPublishingAdditionalParameters,
-  [Parameter(Mandatory=$false)][string] $SymbolPublishingAdditionalParameters,
-  [Parameter(Mandatory=$false)][string] $SigningValidationAdditionalParameters
+  [Parameter(Mandatory=$false)][string] $SymbolPublishingAdditionalParameters
 )
 
 try {
diff --git a/eng/common/templates/post-build/post-build.yml b/eng/common/templates/post-build/post-build.yml
index d1759337abe..8985b429c85 100644
--- a/eng/common/templates/post-build/post-build.yml
+++ b/eng/common/templates/post-build/post-build.yml
@@ -263,6 +263,5 @@ stages:
             -AzdoToken '$(publishing-dnceng-devdiv-code-r-build-re)'
             -MaestroToken '$(MaestroApiAccessToken)'
             -WaitPublishingFinish true
-            -PublishInstallersAndChecksums ${{ parameters.publishInstallersAndChecksums }}
             -ArtifactsPublishingAdditionalParameters '${{ parameters.artifactsPublishingAdditionalParameters }}'
             -SymbolPublishingAdditionalParameters '${{ parameters.symbolPublishingAdditionalParameters }}'
\ No newline at end of file
diff --git a/eng/promote-build.yml b/eng/promote-build.yml
index 930907f3c4a..267b77d7a7a 100644
--- a/eng/promote-build.yml
+++ b/eng/promote-build.yml
@@ -17,6 +17,20 @@ parameters:
     type: string 
     default: ' '
 
+  - name: SymbolPublishingAdditionalParameters
+    displayName: Additional (MSBuild) properties for symbol publishing
+    type: string 
+    default: ' '
+
+  - name: ArtifactsPublishingAdditionalParameters
+    displayName: Additional (MSBuild) properties for general asset publishing
+    type: string 
+    default: ' '
+
+  # The parameters below here are legacy. They are passed by add-build-to-channel
+  # to the build pipeline, and if they are not present in the pipeline, then queueing
+  # will fail. Remove once add-build-to-channel has been updated to remove the parameters.
+
   - name: EnableSourceLinkValidation
     displayName: Should Sourcelink validation be performed?
     type: boolean 
@@ -36,16 +50,6 @@ parameters:
     displayName: Should installers and checksums be published?
     type: boolean 
     default: true
-      
-  - name: SymbolPublishingAdditionalParameters
-    displayName: Additional (MSBuild) properties for symbol publishing
-    type: string 
-    default: ' '
-
-  - name: ArtifactsPublishingAdditionalParameters
-    displayName: Additional (MSBuild) properties for general asset publishing
-    type: string 
-    default: ' '
     
   - name: SigningValidationAdditionalParameters
     displayName: Additional (MSBuild) properties for signing validation
@@ -54,101 +58,10 @@ parameters:
 
 trigger: none
 
-variables:
-  _DotNetArtifactsCategory: .NETCore
-
-pool:
-  vmImage: ubuntu-latest
-
 stages:
-- stage: prepare_promotion
-  displayName: Prepare for Promotion
-  jobs:
-    - job:
-      displayName: Validate Parameters
-      variables:
-        - template: common\templates\post-build\common-variables.yml
-      steps:
-        - checkout: none
-        
-        - task: PowerShell@2
-          displayName: Validate Build & Channel
-          inputs:
-            targetType: inline
-            script: |
-              # Keeping this script inline so that we don't need to checkout the whole repo to use just one file
-              try {
-                  $buildApiEndpoint = "$(MaestroApiEndPoint)/api/builds/${Env:BARBuildId}?api-version=$(MaestroApiVersion)"
-
-                  $apiHeaders = New-Object 'System.Collections.Generic.Dictionary[[String],[String]]'
-                  $apiHeaders.Add('Accept', 'application/json')
-                  $apiHeaders.Add('Authorization',"Bearer ${Env:MAESTRO_API_TOKEN}")
-
-                  $buildInfo = try { Invoke-WebRequest -Method Get -Uri $buildApiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
-
-                  if (!$buildInfo) {
-                    Write-Host "Build with BAR ID ${Env:BARBuildId} was not found in BAR!"
-                    exit 1
-                  }
-
-                  $channels = ${Env:PromoteToChannelIds} -split "-"
-                  foreach ($channelId in $channels) {
-                    $channelApiEndpoint = "$(MaestroApiEndPoint)/api/channels/${channelId}?api-version=$(MaestroApiVersion)"
-                    $channelInfo = try { Invoke-WebRequest -Method Get -Uri $channelApiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
-
-                    if (!$channelInfo) {
-                      Write-Host "Channel with ID ${channelId} was not found in BAR. Aborting."
-                      exit 1
-                    }
-                  }
-                  
-                  $azureDevOpsBuildNumber = $buildInfo.azureDevOpsBuildNumber
-                  $channelName = $channelInfo.name
-                  $azureDevOpsRepository = "Unknown"
-                  $lastIndexOfSlash = $buildInfo.azureDevOpsRepository.LastIndexOf('/')
-
-                  if ($lastIndexOfSlash -ne -1) {
-                    $azureDevOpsRepository = $buildInfo.azureDevOpsRepository.Substring($lastIndexOfSlash + 1)
-
-                    # Invalid chars in Azdo build number: '"', '/', ':', '<', '>', '\', '|', '?', '@', and '*'
-                    $azureDevOpsRepository = $azureDevOpsRepository -replace '["/:<>\\|?@*"]', '_'
-                  }
-
-                  $buildNumberName = "Promoting $azureDevOpsRepository build $azureDevOpsBuildNumber to channel(s) ${Env:PromoteToChannelIds}#"
-
-                  # Maximum buildnumber length is 255 chars
-                  if ($buildNumberName.Length -GT 255) {
-                    $buildNumberName = $buildNumberName.Substring(0, 255)
-                  }
-
-                  Write-Host "##vso[build.updatebuildnumber]$buildNumberName"
-                  Write-Host "##vso[build.addbuildtag]$channelName"
-              }
-              catch {
-                Write-Host $_
-                Write-Host $_.Exception
-                Write-Host $_.ScriptStackTrace
-                exit 1
-              }
-          env:
-            MAESTRO_API_TOKEN: $(MaestroApiAccessToken)
-            BARBuildId: ${{ parameters.BARBuildId }}
-            PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
-
-- ${{ if ge(parameters.PublishingInfraVersion, 3) }}:
-  - template: \eng\publishing\v3\publish.yml
-    parameters:
-      PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
-      BARBuildId: ${{ parameters.BARBuildId }}
-    
-      enableSourceLinkValidation: ${{ parameters.EnableSourceLinkValidation }}
-      enableNugetValidation: ${{ parameters.EnableNugetValidation }}
-      enableSigningValidation: ${{ parameters.EnableSigningValidation }}
-      
-      validateDependsOn:
-        - prepare_promotion
-      
-      publishInstallersAndChecksums: ${{ parameters.PublishInstallersAndChecksums }}
-      symbolPublishingAdditionalParameters: ${{ parameters.SymbolPublishingAdditionalParameters }}
-      artifactsPublishingAdditionalParameters: ${{ parameters.ArtifactsPublishingAdditionalParameters }}
-      signingValidationAdditionalParameters: ${{ parameters.SigningValidationAdditionalParameters }}
+- template: \eng\publishing\v3\publish.yml
+  parameters:
+    PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
+    BARBuildId: ${{ parameters.BARBuildId }}
+    symbolPublishingAdditionalParameters: ${{ parameters.SymbolPublishingAdditionalParameters }}
+    artifactsPublishingAdditionalParameters: ${{ parameters.ArtifactsPublishingAdditionalParameters }}
diff --git a/eng/publishing/v3/common-variables.yml b/eng/publishing/v3/common-variables.yml
deleted file mode 100644
index ed518e46b57..00000000000
--- a/eng/publishing/v3/common-variables.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-variables:
-  - group: AzureDevOps-Artifact-Feeds-Pats
-  - group: DotNet-Blob-Feed
-  - group: DotNet-DotNetCli-Storage
-  - group: DotNet-MSRC-Storage
-  - group: Publish-Build-Assets
-    
-  # Default Maestro++ API Endpoint and API Version
-  - name: MaestroApiEndPoint
-    value: "https://maestro-prod.westus2.cloudapp.azure.com"
-  - name: MaestroApiAccessToken
-    value: $(MaestroAccessToken)
-  - name: MaestroApiVersion
-    value: "2020-02-20"
-
-  - name: SourceLinkCLIVersion
-    value: 3.0.0
-
-  # Skip component governance and codesign validation for SDL. These jobs
-  # create no content.
-  - name: skipComponentGovernanceDetection
-    value: true
-  - name: runCodesignValidationInjection
-    value: false
\ No newline at end of file
diff --git a/eng/publishing/v3/nuget-validation.yml b/eng/publishing/v3/nuget-validation.yml
deleted file mode 100644
index 6c9e0b8c3ef..00000000000
--- a/eng/publishing/v3/nuget-validation.yml
+++ /dev/null
@@ -1,54 +0,0 @@
-jobs:
-- job:
-  displayName: NuGet Validation
-  dependsOn: setupMaestroVars
-  pool:
-    vmImage: 'windows-2019'
-  variables:
-    - name: AzDOProjectName
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-    - name: AzDOPipelineId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-    - name: AzDOBuildId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-  steps:
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Package Artifacts
-      inputs:
-        buildType: specific
-        buildVersionToDownload: specific
-        project: $(AzDOProjectName)
-        pipeline: $(AzDOPipelineId)
-        buildId: $(AzDOBuildId)
-        artifactName: PackageArtifacts
-        checkDownloadedFiles: true
-
-    - task: PowerShell@2
-      displayName: Validate
-      inputs:
-        targetType: inline
-        script: |
-          try {
-            $ErrorActionPreference = 'Stop'
-            Set-StrictMode -Version 2.0
-
-            # `tools.ps1` requires $ci to be $true
-            $ci = $true
-            $disableConfigureToolsetImport = $true
-            . ${Env:BUILD_SOURCESDIRECTORY}\eng\common\tools.ps1
-
-            $ToolDestinationPath = "${Env:AGENT_BUILDDIRECTORY}\Extract\"
-            $PackagesPath = "${Env:BUILD_ARTIFACTSTAGINGDIRECTORY}\PackageArtifacts\"
-            $url = 'https://raw.githubusercontent.com/NuGet/NuGetGallery/3e25ad135146676bcab0050a516939d9958bfa5d/src/VerifyMicrosoftPackage/verify.ps1'
-
-            New-Item -ItemType 'directory' -Path ${ToolDestinationPath} -Force
-
-            Invoke-WebRequest $url -OutFile ${ToolDestinationPath}\verify.ps1 
-
-            & ${ToolDestinationPath}\verify.ps1 ${PackagesPath}\*.nupkg
-          } 
-          catch {
-            Write-Host $_.ScriptStackTrace
-            Write-PipelineTelemetryError -Category 'NuGetValidation' -Message $_
-            ExitWithExitCode 1
-          }
diff --git a/eng/publishing/v3/postbuild-checks.yml b/eng/publishing/v3/postbuild-checks.yml
deleted file mode 100644
index 9382a1a40e3..00000000000
--- a/eng/publishing/v3/postbuild-checks.yml
+++ /dev/null
@@ -1,9 +0,0 @@
-jobs:
-- job:
-  displayName: Post-build Checks
-  dependsOn: setupMaestroVars
-  variables:
-    - name: TargetChannels
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.TargetChannels'] ]
-  pool:
-    vmImage: 'windows-2019'
diff --git a/eng/publishing/v3/publish-assets.yml b/eng/publishing/v3/publish-assets.yml
deleted file mode 100644
index 7753ebf8db3..00000000000
--- a/eng/publishing/v3/publish-assets.yml
+++ /dev/null
@@ -1,109 +0,0 @@
-parameters:
-  artifactsPublishingAdditionalParameters: ''
-  publishInstallersAndChecksums: true
-  PromoteToChannelIds: ''
-  symbolPublishingAdditionalParameters: ''
-  buildQuality: 'daily'
-
-jobs:
-- job: publish_assets
-  displayName: Publish Assets and Symbols
-  dependsOn: setupMaestroVars
-  timeoutInMinutes: 120
-  variables:
-    - group: DotNet-Symbol-Server-Pats
-    - group: DotNetBuilds storage account tokens
-    - name: BARBuildId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.BARBuildId'] ]
-    - name: IsStableBuild
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.IsStableBuild'] ]
-    - name: AzDOProjectName
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-    - name: AzDOPipelineId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-    - name: AzDOBuildId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-    - name: AzDOAccount
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildAccount'] ]
-
-  pool:
-    vmImage: 'windows-2019'
-  steps:
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Build Assets
-      continueOnError: true
-      enabled: true
-      inputs:
-        buildType: specific
-        buildVersionToDownload: specific
-        project: $(AzDOProjectName)
-        pipeline: $(AzDOPipelineId)
-        buildId: $(AzDOBuildId)
-        downloadType: 'specific'
-        itemPattern: |
-          AssetManifests/**
-          BlobArtifacts/MergedManifest.xml
-          PdbArtifacts/**
-          ReleaseConfigs/SymbolPublishingExclusionsFile.txt
-        downloadPath: '$(Build.ArtifactStagingDirectory)'
-
-    - task: NuGetToolInstaller@1
-      displayName: 'Install NuGet.exe'
-
-    # This is necessary whenever we want to publish/restore to an AzDO private feed
-    - task: NuGetAuthenticate@0
-      displayName: 'Authenticate to AzDO Feeds'
-
-    - task: PowerShell@2
-      displayName: Enable cross-org publishing
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/enable-cross-org-publishing.ps1
-        arguments: -token $(dn-bot-dnceng-artifact-feeds-rw)
-
-    - task: PowerShell@2
-      displayName: Publish packages, blobs and symbols
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
-        arguments: -task PublishArtifactsInManifest -restore -msbuildEngine dotnet
-          /p:PublishingInfraVersion=3
-          /p:BARBuildId=$(BARBuildId)
-          /p:TargetChannels='${{ parameters.PromoteToChannelIds }}'
-          /p:IsInternalBuild=${{ and(ne(variables['System.TeamProject'], 'public'), contains(variables['Build.SourceBranch'], 'internal')) }}
-          /p:NugetPath=$(NuGetExeToolPath)
-          /p:MaestroApiEndpoint='$(MaestroApiEndPoint)'
-          /p:BuildAssetRegistryToken='$(MaestroApiAccessToken)'
-          /p:ManifestsBasePath='$(Build.ArtifactStagingDirectory)/AssetManifests/'
-          /p:BlobBasePath='$(Build.ArtifactStagingDirectory)/BlobArtifacts/'
-          /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts/'
-          /p:PublishInstallersAndChecksums=${{ parameters.publishInstallersAndChecksums }}
-          /p:InstallersAzureAccountKey=$(dotnetcli-storage-key)
-          /p:InternalInstallersAzureAccountKey=$(dotnetclimsrc-access-key)
-          /p:ChecksumsAzureAccountKey=$(dotnetclichecksums-storage-key)
-          /p:InternalChecksumsAzureAccountKey=$(dotnetclichecksumsmsrc-storage-key)
-          /p:AzureDevOpsFeedsKey='$(dn-bot-dnceng-artifact-feeds-rw)'
-          /p:AzureStorageTargetFeedPAT='$(dotnetfeed-storage-access-key-1)'
-          /p:AkaMSClientId=$(akams-client-id)
-          /p:AkaMSClientSecret=$(akams-client-secret)
-          ${{ parameters.artifactsPublishingAdditionalParameters }}
-          /p:PDBArtifactsBasePath='$(Build.ArtifactStagingDirectory)/PDBArtifacts/'
-          /p:SymbolPublishingExclusionsFile='$(Build.ArtifactStagingDirectory)/ReleaseConfigs/SymbolPublishingExclusionsFile.txt'
-          ${{ parameters.symbolPublishingAdditionalParameters}}
-          /p:MsdlToken=$(microsoft-symbol-server-pat)
-          /p:SymWebToken=$(symweb-symbol-server-pat)
-          /p:BuildQuality='${{ parameters.buildQuality }}'
-          /p:AzdoApiToken='$(dn-bot-all-orgs-build-rw-code-rw)'
-          /p:ArtifactsBasePath='$(Build.ArtifactStagingDirectory)/'
-          /p:BuildId='$(AzDOBuildId)'
-          /p:AzureDevOpsOrg='$(AzDOAccount)'
-          /p:AzureProject='$(AzDOProjectName)'
-          /p:UseStreamingPublishing='true'
-          /p:StreamingPublishingMaxClients=16
-          /p:NonStreamingPublishingMaxClients=12
-          /p:DotNetBuildsPublicUriBase64='$(dotnetbuilds-public-container-uri-base64)'
-          /p:DotNetBuildsPublicChecksumsUriBase64='$(dotnetbuilds-public-container-checksum-uri-base64)'
-          /p:DotNetBuildsInternalUriBase64='$(dotnetbuilds-internal-container-uri-base64)'
-          /p:DotNetBuildsInternalChecksumsUriBase64='$(dotnetbuilds-internal-container-checksum-uri-base64)'
-    - template: /eng/common/templates/steps/publish-logs.yml
-      parameters:
-        StageLabel: '${{ parameters.stageName }}'
-        JobLabel: 'AssetsPublishing'
diff --git a/eng/publishing/v3/publish-symbols.yml b/eng/publishing/v3/publish-symbols.yml
deleted file mode 100644
index 10196525e95..00000000000
--- a/eng/publishing/v3/publish-symbols.yml
+++ /dev/null
@@ -1,65 +0,0 @@
-parameters:
-  symbolPublishingAdditionalParameters: ''
-
-jobs:
-- job: publish_symbols
-  displayName: Symbols Publishing
-  dependsOn: setupMaestroVars
-  variables:
-    - group: DotNet-Symbol-Server-Pats
-    - name: AzDOProjectName
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-    - name: AzDOPipelineId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-    - name: AzDOBuildId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-  pool:
-    vmImage: 'windows-2019'
-  steps:
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Build Assets
-      continueOnError: true
-      inputs:
-        buildType: specific
-        buildVersionToDownload: specific
-        project: $(AzDOProjectName)
-        pipeline: $(AzDOPipelineId)
-        buildId: $(AzDOBuildId)
-        downloadType: 'specific'
-        itemPattern: |
-          PdbArtifacts/**
-          BlobArtifacts/**
-        downloadPath: '$(Build.ArtifactStagingDirectory)'
-        checkDownloadedFiles: true
-        
-    # This is necessary whenever we want to publish/restore to an AzDO private feed
-    # Since sdk-task.ps1 tries to restore packages we need to do this authentication here
-    # otherwise it'll complain about accessing a private feed.
-    - task: NuGetAuthenticate@0
-      displayName: 'Authenticate to AzDO Feeds'
-
-    - task: PowerShell@2
-      displayName: Enable cross-org publishing
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/enable-cross-org-publishing.ps1
-        arguments: -token $(dn-bot-dnceng-artifact-feeds-rw)
-
-    - task: PowerShell@2
-      displayName: Publish
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
-        arguments: -task PublishToSymbolServers -restore -msbuildEngine dotnet
-          /p:DotNetSymbolServerTokenMsdl=$(microsoft-symbol-server-pat)
-          /p:DotNetSymbolServerTokenSymWeb=$(symweb-symbol-server-pat)
-          /p:PDBArtifactsDirectory='$(Build.ArtifactStagingDirectory)/PDBArtifacts/'
-          /p:BlobBasePath='$(Build.ArtifactStagingDirectory)/BlobArtifacts/'
-          /p:SymbolPublishingExclusionsFile='$(Build.SourcesDirectory)/eng/SymbolPublishingExclusionsFile.txt'
-          /p:Configuration=Release
-          /p:PublishToMSDL=false
-          /p:PublishToSymWeb=true
-          ${{ parameters.symbolPublishingAdditionalParameters }}
-
-    - template: /eng/common/templates/steps/publish-logs.yml
-      parameters:
-        StageLabel: '${{ parameters.stageName }}'
-        JobLabel: 'SymbolPublishing'
diff --git a/eng/publishing/v3/publish.yml b/eng/publishing/v3/publish.yml
index ef0315cff82..5fcd33637dd 100644
--- a/eng/publishing/v3/publish.yml
+++ b/eng/publishing/v3/publish.yml
@@ -1,61 +1,189 @@
 parameters:
-  BARBuildId: ''
+  artifactsPublishingAdditionalParameters: ''
   PromoteToChannelIds: ''
-
-  enableSourceLinkValidation: false
-  enableSigningValidation: true
-  enableNugetValidation: true
-  publishInstallersAndChecksums: true
-  
-  # These parameters let the user customize the call to sdk-task.ps1 for publishing
-  # symbols & general artifacts as well as for signing validation
+  BARBuildId: ''
   symbolPublishingAdditionalParameters: ''
-  artifactsPublishingAdditionalParameters: ''
-  signingValidationAdditionalParameters: ''
-
-  # Which stages should finish execution before post-build stages start
-  validateDependsOn:
-  - build
-  publishDependsOn: 
-  - Validate
+  buildQuality: 'daily'
 
 stages:
-  - stage: Validate
-    dependsOn: ${{ parameters.validateDependsOn }}
-    displayName: Validate Build Assets
-    variables:
-      - template: /eng/publishing/v3/common-variables.yml
+  - stage: publish
+    displayName: Publishing
     jobs:
-    - template: /eng/publishing/v3/setup-maestro-vars.yml
-      parameters:
-        BARBuildId: ${{ parameters.BARBuildId }}
-        PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
+    - job: publish_assets
+      displayName: Publish Assets and Symbols
+      timeoutInMinutes: 120
+      variables:
+        - group: DotNet-Symbol-Server-Pats
+        - group: DotNetBuilds storage account tokens
+        - group: AzureDevOps-Artifact-Feeds-Pats
+        - group: DotNet-Blob-Feed
+        - group: DotNet-DotNetCli-Storage
+        - group: DotNet-MSRC-Storage
+        - group: Publish-Build-Assets
+          
+        # Default Maestro++ API Endpoint and API Version
+        - name: MaestroApiEndPoint
+          value: "https://maestro-prod.westus2.cloudapp.azure.com"
+        - name: MaestroApiAccessToken
+          value: $(MaestroAccessToken)
+        - name: MaestroApiVersion
+          value: "2020-02-20"
 
-    - template: /eng/publishing/v3/postbuild-checks.yml
+      pool:
+        vmImage: 'windows-2019'
+      steps:
+        - task: PowerShell@2
+          displayName: Validate and Locate Build
+          inputs:
+            targetType: inline
+            script: |
+              # Keeping this script inline so that we don't need to checkout the whole repo to use just one file
+              try {
+                  $buildApiEndpoint = "$(MaestroApiEndPoint)/api/builds/${Env:BARBuildId}?api-version=$(MaestroApiVersion)"
 
-    - ${{ if eq(parameters.enableNugetValidation, 'True') }}:
-      - template: /eng/publishing/v3/nuget-validation.yml
+                  $apiHeaders = New-Object 'System.Collections.Generic.Dictionary[[String],[String]]'
+                  $apiHeaders.Add('Accept', 'application/json')
+                  $apiHeaders.Add('Authorization',"Bearer ${Env:MAESTRO_API_TOKEN}")
 
-    - ${{ if eq(parameters.enableSigningValidation, 'True') }}:
-      - template: /eng/publishing/v3/signing-validation.yml
+                  $buildInfo = try { Invoke-WebRequest -Method Get -Uri $buildApiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
 
-    - ${{ if eq(parameters.enableSourceLinkValidation, 'True') }}:
-      - template: /eng/publishing/v3/sourcelink-validation.yml
+                  if (!$buildInfo) {
+                    Write-Host "Build with BAR ID ${Env:BARBuildId} was not found in BAR!"
+                    exit 1
+                  }
 
-  - stage: publish
-    dependsOn: ${{ parameters.publishDependsOn }}
-    variables:
-      - template: /eng/publishing/v3/common-variables.yml
-    displayName: Publishing
-    jobs:
-    - template: /eng/publishing/v3/setup-maestro-vars.yml
-      parameters:
-        BARBuildId: ${{ parameters.BARBuildId }}
-        PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
-        
-    - template: /eng/publishing/v3/publish-assets.yml
-      parameters:
-        PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
-        publishInstallersAndChecksums: ${{ parameters.publishInstallersAndChecksums }}
-        artifactsPublishingAdditionalParameters: ${{ parameters.artifactsPublishingAdditionalParameters }}
-        symbolPublishingAdditionalParameters: ${{parameters.symbolPublishingAdditionalParameters}}
+                  $channels = ${Env:PromoteToChannelIds} -split "-"
+                  $channelNames = @()
+                  foreach ($channelId in $channels) {
+                    $channelApiEndpoint = "$(MaestroApiEndPoint)/api/channels/${channelId}?api-version=$(MaestroApiVersion)"
+                    $channelInfo = try { Invoke-WebRequest -Method Get -Uri $channelApiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
+
+                    if (!$channelInfo) {
+                      Write-Host "Channel with ID ${channelId} was not found in BAR. Aborting."
+                      exit 1
+                    }
+
+                    $channelNames += "'$($channelInfo.name)'"
+                  }
+                  
+                  $azureDevOpsBuildNumber = $buildInfo.azureDevOpsBuildNumber
+                  $azureDevOpsRepository = "Unknown"
+                  $lastIndexOfSlash = $buildInfo.azureDevOpsRepository.LastIndexOf('/')
+
+                  if ($lastIndexOfSlash -ne -1) {
+                    $azureDevOpsRepository = $buildInfo.azureDevOpsRepository.Substring($lastIndexOfSlash + 1)
+
+                    # Invalid chars in Azdo build number: '"', '/', ':', '<', '>', '\', '|', '?', '@', and '*'
+                    $azureDevOpsRepository = $azureDevOpsRepository -replace '["/:<>\\|?@*"]', '_'
+                  }
+
+                  $channelNames = $channelNames -join ", "
+                  $buildNumberName = "Promoting $azureDevOpsRepository build $azureDevOpsBuildNumber (${Env:BARBuildId}) to channel(s) $channelNames #"
+
+                  # Maximum buildnumber length is 255 chars
+                  if ($buildNumberName.Length -GT 255) {
+                    $buildNumberName = $buildNumberName.Substring(0, 255)
+                  }
+
+                  # Set tags on publishing for visibility 
+
+                  Write-Host "##vso[build.updatebuildnumber]$buildNumberName"
+                  Write-Host "##vso[build.addbuildtag]Channel(s) - $channelNames"
+                  Write-Host "##vso[build.addbuildtag]BAR ID - ${Env:BARBuildId}"
+
+                  # Set variables used in publishing.
+                  Write-Host "##vso[task.setvariable variable=AzDOProject]$($buildInfo.azureDevOpsProject)"
+                  Write-Host "##vso[task.setvariable variable=AzDOPipelineId]$($buildInfo.azureDevOpsBuildDefinitionId)"
+                  Write-Host "##vso[task.setvariable variable=AzDOBuildId]$($buildInfo.azureDevOpsBuildId)"
+                  Write-Host "##vso[task.setvariable variable=AzDOAccount]$($buildInfo.azureDevOpsAccount)"
+                  Write-Host "##vso[task.setvariable variable=AzDOBranch]$($buildInfo.azureDevOpsBranch)"
+              }
+              catch {
+                Write-Host $_
+                Write-Host $_.Exception
+                Write-Host $_.ScriptStackTrace
+                exit 1
+              }
+          env:
+            MAESTRO_API_TOKEN: $(MaestroApiAccessToken)
+            BARBuildId: ${{ parameters.BARBuildId }}
+            PromoteToChannelIds: ${{ parameters.PromoteToChannelIds }}
+
+        - task: DownloadBuildArtifacts@0
+          displayName: Download Build Assets
+          continueOnError: true
+          enabled: true
+          inputs:
+            buildType: specific
+            buildVersionToDownload: specific
+            project:  $(AzDOProject)
+            pipeline: $(AzDOPipelineId)
+            buildId: $(AzDOBuildId)
+            downloadType: 'specific'
+            itemPattern: |
+              AssetManifests/**
+              BlobArtifacts/MergedManifest.xml
+              PdbArtifacts/**
+              ReleaseConfigs/SymbolPublishingExclusionsFile.txt
+            downloadPath: '$(Build.ArtifactStagingDirectory)'
+
+        - task: NuGetToolInstaller@1
+          displayName: 'Install NuGet.exe'
+
+        # This is necessary whenever we want to publish/restore to an AzDO private feed
+        - task: NuGetAuthenticate@0
+          displayName: 'Authenticate to AzDO Feeds'
+
+        - task: PowerShell@2
+          displayName: Enable cross-org publishing
+          inputs:
+            filePath: $(Build.SourcesDirectory)/eng/common/enable-cross-org-publishing.ps1
+            arguments: -token $(dn-bot-dnceng-artifact-feeds-rw)
+
+        - task: PowerShell@2
+          displayName: Publish packages, blobs and symbols
+          inputs:
+            filePath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
+            arguments: -task PublishArtifactsInManifest -restore -msbuildEngine dotnet
+              /p:PublishingInfraVersion=3
+              /p:BARBuildId=${{ parameters.BARBuildId }}
+              /p:TargetChannels='${{ parameters.PromoteToChannelIds }}'
+              /p:IsInternalBuild=${{ contains(variables['AzDOBranch'], 'internal/') }}
+              /p:NugetPath=$(NuGetExeToolPath)
+              /p:MaestroApiEndpoint='$(MaestroApiEndPoint)'
+              /p:BuildAssetRegistryToken='$(MaestroApiAccessToken)'
+              /p:ManifestsBasePath='$(Build.ArtifactStagingDirectory)/AssetManifests/'
+              /p:BlobBasePath='$(Build.ArtifactStagingDirectory)/BlobArtifacts/'
+              /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts/'
+              /p:PublishInstallersAndChecksums=true
+              /p:InstallersAzureAccountKey=$(dotnetcli-storage-key)
+              /p:InternalInstallersAzureAccountKey=$(dotnetclimsrc-access-key)
+              /p:ChecksumsAzureAccountKey=$(dotnetclichecksums-storage-key)
+              /p:InternalChecksumsAzureAccountKey=$(dotnetclichecksumsmsrc-storage-key)
+              /p:AzureDevOpsFeedsKey='$(dn-bot-dnceng-artifact-feeds-rw)'
+              /p:AzureStorageTargetFeedPAT='$(dotnetfeed-storage-access-key-1)'
+              /p:AkaMSClientId=$(akams-client-id)
+              /p:AkaMSClientSecret=$(akams-client-secret)
+              ${{ parameters.artifactsPublishingAdditionalParameters }}
+              /p:PDBArtifactsBasePath='$(Build.ArtifactStagingDirectory)/PDBArtifacts/'
+              /p:SymbolPublishingExclusionsFile='$(Build.ArtifactStagingDirectory)/ReleaseConfigs/SymbolPublishingExclusionsFile.txt'
+              ${{ parameters.symbolPublishingAdditionalParameters}}
+              /p:MsdlToken=$(microsoft-symbol-server-pat)
+              /p:SymWebToken=$(symweb-symbol-server-pat)
+              /p:BuildQuality='${{ parameters.buildQuality }}'
+              /p:AzdoApiToken='$(dn-bot-all-orgs-build-rw-code-rw)'
+              /p:ArtifactsBasePath='$(Build.ArtifactStagingDirectory)/'
+              /p:BuildId='$(AzDOBuildId)'
+              /p:AzureDevOpsOrg='$(AzDOAccount)'
+              /p:AzureProject='$(AzDOProject)'
+              /p:UseStreamingPublishing='true'
+              /p:StreamingPublishingMaxClients=16
+              /p:NonStreamingPublishingMaxClients=12
+              /p:DotNetBuildsPublicUriBase64='$(dotnetbuilds-public-container-uri-base64)'
+              /p:DotNetBuildsPublicChecksumsUriBase64='$(dotnetbuilds-public-container-checksum-uri-base64)'
+              /p:DotNetBuildsInternalUriBase64='$(dotnetbuilds-internal-container-uri-base64)'
+              /p:DotNetBuildsInternalChecksumsUriBase64='$(dotnetbuilds-internal-container-checksum-uri-base64)'
+        - template: /eng/common/templates/steps/publish-logs.yml
+          parameters:
+            StageLabel: '${{ parameters.stageName }}'
+            JobLabel: 'AssetsPublishing'
diff --git a/eng/publishing/v3/setup-maestro-vars.yml b/eng/publishing/v3/setup-maestro-vars.yml
deleted file mode 100644
index ae2e65527b6..00000000000
--- a/eng/publishing/v3/setup-maestro-vars.yml
+++ /dev/null
@@ -1,61 +0,0 @@
-parameters:
-  BARBuildId: ''
-  PromoteToChannelIds: ''
-
-jobs:
-- job: setupMaestroVars
-  displayName: Setup Maestro Vars
-  variables:
-    - template: /eng/publishing/v3/common-variables.yml
-  pool:
-    vmImage: 'windows-2019'
-  steps:
-    - checkout: none
-
-    - task: PowerShell@2
-      name: setReleaseVars
-      displayName: Set Release Configs Vars
-      inputs:
-        targetType: inline
-        script: |
-          try {
-            dir Env:
-          
-            $buildApiEndpoint = "${Env:MaestroApiEndPoint}/api/builds/${Env:BARBuildId}?api-version=${Env:MaestroApiVersion}"
-
-            $apiHeaders = New-Object 'System.Collections.Generic.Dictionary[[String],[String]]'
-            $apiHeaders.Add('Accept', 'application/json')
-            $apiHeaders.Add('Authorization',"Bearer ${Env:MAESTRO_API_TOKEN}")
-
-            $buildInfo = try { Invoke-WebRequest -Method Get -Uri $buildApiEndpoint -Headers $apiHeaders | ConvertFrom-Json } catch { Write-Host "Error: $_" }
-
-            $BarId = $Env:BARBuildId
-            $Channels = $Env:PromoteToMaestroChannels -split ","
-            $Channels = $Channels -join "]["
-            $Channels = "[$Channels]"
-
-            $IsStableBuild = $buildInfo.stable
-            $AzureDevOpsProject = $buildInfo.azureDevOpsProject
-            $AzureDevOpsBuildDefinitionId = $buildInfo.azureDevOpsBuildDefinitionId
-            $AzureDevOpsBuildId = $buildInfo.azureDevOpsBuildId
-            $AzureDevOpsAccount = $buildInfo.azureDevOpsAccount
-
-            Write-Host "##vso[task.setvariable variable=BARBuildId;isOutput=true]$BarId"
-            Write-Host "##vso[task.setvariable variable=TargetChannels;isOutput=true]$Channels"
-            Write-Host "##vso[task.setvariable variable=IsStableBuild;isOutput=true]$IsStableBuild"
-
-            Write-Host "##vso[task.setvariable variable=AzDOProjectName;isOutput=true]$AzureDevOpsProject"
-            Write-Host "##vso[task.setvariable variable=AzDOPipelineId;isOutput=true]$AzureDevOpsBuildDefinitionId"
-            Write-Host "##vso[task.setvariable variable=AzDOBuildId;isOutput=true]$AzureDevOpsBuildId"
-            Write-Host "##vso[task.setvariable variable=AzDOBuildAccount;isOutput=true]$AzureDevOpsAccount"
-          }
-          catch {
-            Write-Host $_
-            Write-Host $_.Exception
-            Write-Host $_.ScriptStackTrace
-            exit 1
-          }
-      env:
-        MAESTRO_API_TOKEN: $(MaestroApiAccessToken)
-        BARBuildId: ${{ parameters.BARBuildId }}
-        PromoteToMaestroChannels: ${{ parameters.PromoteToChannelIds }}
diff --git a/eng/publishing/v3/signing-validation.yml b/eng/publishing/v3/signing-validation.yml
deleted file mode 100644
index 22611ddff7f..00000000000
--- a/eng/publishing/v3/signing-validation.yml
+++ /dev/null
@@ -1,56 +0,0 @@
-jobs:
-- job:
-  displayName: Signing Validation
-  dependsOn: setupMaestroVars
-  variables:
-    - template: /eng/publishing/v3/common-variables.yml
-    - name: AzDOProjectName
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-    - name: AzDOPipelineId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-    - name: AzDOBuildId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-  pool:
-    vmImage: 'windows-2019'
-  steps:
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Package Artifacts
-      inputs:
-        buildType: specific
-        buildVersionToDownload: specific
-        project: $(AzDOProjectName)
-        pipeline: $(AzDOPipelineId)
-        buildId: $(AzDOBuildId)
-        artifactName: PackageArtifacts
-        checkDownloadedFiles: true
-        itemPattern: |
-          **
-          !**/Microsoft.SourceBuild.Intermediate.*.nupkg
-
-    # This is necessary whenever we want to publish/restore to an AzDO private feed
-    # Since sdk-task.ps1 tries to restore packages we need to do this authentication here
-    # otherwise it'll complain about accessing a private feed.
-    - task: NuGetAuthenticate@0
-      displayName: 'Authenticate to AzDO Feeds'
-
-    - task: PowerShell@2
-      displayName: Enable cross-org publishing
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/enable-cross-org-publishing.ps1
-        arguments: -token $(dn-bot-dnceng-artifact-feeds-rw)
-
-    # Signing validation will optionally work with the buildmanifest file which is downloaded from
-    # Azure DevOps above.
-    - task: PowerShell@2
-      displayName: Validate
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/sdk-task.ps1
-        arguments: -task SigningValidation -restore -msbuildEngine vs
-          /p:PackageBasePath='$(Build.ArtifactStagingDirectory)/PackageArtifacts'
-          /p:SignCheckExclusionsFile='$(Build.SourcesDirectory)/eng/SignCheckExclusionsFile.txt'
-          ${{ parameters.signingValidationAdditionalParameters }}
-
-    - template: /eng/common/templates/steps/publish-logs.yml
-      parameters:
-        StageLabel: 'Validation'
-        JobLabel: 'Signing'
diff --git a/eng/publishing/v3/sourcelink-validation.yml b/eng/publishing/v3/sourcelink-validation.yml
deleted file mode 100644
index b290d57e424..00000000000
--- a/eng/publishing/v3/sourcelink-validation.yml
+++ /dev/null
@@ -1,36 +0,0 @@
-jobs:
-- job:
-  displayName: SourceLink Validation
-  dependsOn: setupMaestroVars
-  variables:
-    - template: /eng/publishing/v3/common-variables.yml
-    - name: AzDOProjectName
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOProjectName'] ]
-    - name: AzDOPipelineId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOPipelineId'] ]
-    - name: AzDOBuildId
-      value: $[ dependencies.setupMaestroVars.outputs['setReleaseVars.AzDOBuildId'] ]
-  pool:
-    vmImage: 'windows-2019'
-  steps:
-    - task: DownloadBuildArtifacts@0
-      displayName: Download Blob Artifacts
-      inputs:
-        buildType: specific
-        buildVersionToDownload: specific
-        project: $(AzDOProjectName)
-        pipeline: $(AzDOPipelineId)
-        buildId: $(AzDOBuildId)
-        artifactName: BlobArtifacts
-        checkDownloadedFiles: true
-
-    - task: PowerShell@2
-      displayName: Validate
-      inputs:
-        filePath: $(Build.SourcesDirectory)/eng/common/post-build/sourcelink-validation.ps1
-        arguments: -InputPath $(Build.ArtifactStagingDirectory)/BlobArtifacts/ 
-          -ExtractPath $(Agent.BuildDirectory)/Extract/ 
-          -GHRepoName $(Build.Repository.Name) 
-          -GHCommit $(Build.SourceVersion)
-          -SourcelinkCliVersion $(SourceLinkCLIVersion)
-      continueOnError: true