diff --git a/eng/AfterSigning.targets b/eng/AfterSigning.targets
deleted file mode 100644
index d589d15f5c35ee..00000000000000
--- a/eng/AfterSigning.targets
+++ /dev/null
@@ -1,23 +0,0 @@
-<Project>
-
-  <PropertyGroup>
-    <_SuppressSdkImports>false</_SuppressSdkImports>
-  </PropertyGroup>
-
-  <ItemGroup>
-    <InstallerFile Include="$(ArtifactsShippingPackagesDir)**\*.tar.gz;
-                            $(ArtifactsShippingPackagesDir)**\*.zip;
-                            $(ArtifactsShippingPackagesDir)**\*.deb;
-                            $(ArtifactsShippingPackagesDir)**\*.rpm;
-                            $(ArtifactsShippingPackagesDir)**\*.pkg;
-                            $(ArtifactsShippingPackagesDir)**\*.exe;
-                            $(ArtifactsShippingPackagesDir)**\*.msi"
-                   Exclude="$(ArtifactsShippingPackagesDir)**\*.wixpack.zip" />
-
-    <GenerateChecksumItems Include="@(InstallerFile)"
-                           DestinationPath="%(FullPath).sha512" />
-  </ItemGroup>
-
-  <Import Project="Sdk.targets" Sdk="Microsoft.DotNet.Arcade.Sdk" />
-
-</Project>
diff --git a/eng/Publishing.props b/eng/Publishing.props
index d33e44c1704417..20daf6a7e09710 100644
--- a/eng/Publishing.props
+++ b/eng/Publishing.props
@@ -4,57 +4,35 @@
     <ProducesDotNetReleaseShippingAssets>true</ProducesDotNetReleaseShippingAssets>
     <!-- This avoids creating VS.*.symbols.nupkg packages that are identical to the original package. -->
     <AutoGenerateSymbolPackages>false</AutoGenerateSymbolPackages>
-    <!-- TODO: Change condition when runtime's official publishing starts using Publishing.props:
-         https://github.com/dotnet/source-build/issues/4239 -->
-    <EnableDefaultPublishItems Condition="'$(DotNetBuildRepo)' == 'true'">true</EnableDefaultPublishItems>
+    <!-- Set PlatformName to TargetArchitecture to create unique build manifest files. -->
+    <PlatformName Condition="'$(TargetArchitecture)' != ''">$(TargetArchitecture)</PlatformName>
   </PropertyGroup>
 
-  <!-- Retrieve the runtime pack product version.
-       Don't stabilize the package version in order to retrieve the VersionSuffix. -->
-  <Target Name="GetProductVersion">
+  <Target Name="GetNonStableProductVersion">
+    <!-- Retrieve the non-stable runtime pack product version.
+         Don't stabilize the package version in order to retrieve the VersionSuffix. -->
     <MSBuild Projects="$(RepoRoot)src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.sfxproj"
              Targets="ReturnProductVersion"
              Properties="IsShipping=false;
                          Crossgen2SdkOverridePropsPath=;
                          Crossgen2SdkOverrideTargetsPath=">
-      <Output TaskParameter="TargetOutputs" PropertyName="RuntimePackProductVersion" />
+      <Output TaskParameter="TargetOutputs" PropertyName="NonStableProductVersion" />
     </MSBuild>
   </Target>
 
-  <!-- Include installer archives and packages which aren't globbed by default.
-       Don't include Symbols archive as it is already included in Arcade's Publish.proj, with correct blob path. -->
-  <Target Name="PublishInstallers"
-          DependsOnTargets="GetProductVersion"
+  <!-- This target only runs when EnableDefaultArtifacts=true which is a single build leg in CI. -->
+  <Target Name="GenerateProductVersionFiles"
+          DependsOnTargets="GetNonStableProductVersion"
           BeforeTargets="PublishToAzureDevOpsArtifacts"
-          Condition="'$(DotNetBuildRepo)' == 'true'">
-
-    <ItemGroup>
-      <InstallerToPublish Include="$(ArtifactsPackagesDir)**\*.tar.gz;
-                                   $(ArtifactsPackagesDir)**\*.zip;
-                                   $(ArtifactsPackagesDir)**\*.deb;
-                                   $(ArtifactsPackagesDir)**\*.rpm;
-                                   $(ArtifactsPackagesDir)**\*.pkg;
-                                   $(ArtifactsPackagesDir)**\*.exe;
-                                   $(ArtifactsPackagesDir)**\*.msi"
-                          Exclude="$(ArtifactsPackagesDir)**\Symbols.runtime.tar.gz" />
-      <ItemsToPushToBlobFeed Include="@(InstallerToPublish)"
-                             IsShipping="$([System.String]::Copy('%(RecursiveDir)').StartsWith('Shipping'))"
-                             PublishFlatContainer="true"
-                             RelativeBlobPath="Runtime/$(RuntimePackProductVersion)/%(Filename)%(Extension)" />
-
-      <!-- Include checksums -->
-      <ChecksumToPublish Include="$(ArtifactsPackagesDir)**\*.sha512" />
-      <ItemsToPushToBlobFeed Include="@(ChecksumToPublish)"
-                             IsShipping="false"
-                             PublishFlatContainer="true"
-                             RelativeBlobPath="Runtime/$(RuntimePackProductVersion)/%(Filename)%(Extension)" />
-    </ItemGroup>
-  </Target>
+          Condition="'$(EnableDefaultArtifacts)' == 'true'">
+    <!-- Retrieve the runtime pack product version. -->
+    <MSBuild Projects="$(RepoRoot)src/installer/pkg/sfx/Microsoft.NETCore.App/Microsoft.NETCore.App.Runtime.sfxproj"
+             Targets="ReturnProductVersion"
+             Properties="Crossgen2SdkOverridePropsPath=;
+                         Crossgen2SdkOverrideTargetsPath=">
+      <Output TaskParameter="TargetOutputs" PropertyName="ProductVersion" />
+    </MSBuild>
 
-  <Target Name="GenerateAndPublishProductVersionFiles"
-          DependsOnTargets="GetProductVersion"
-          Condition="'$(EnableDefaultPublishItems)' == 'true'"
-          BeforeTargets="PublishToAzureDevOpsArtifacts">
     <ItemGroup>
       <ProductVersionFile Include="$(ArtifactsShippingPackagesDir)productVersion.txt" />
       <ProductVersionFile Include="$(ArtifactsShippingPackagesDir)runtime-productVersion.txt" />
@@ -62,15 +40,23 @@
 
     <!-- Generate productVersion.txt file containing the product version. -->
     <WriteLinesToFile File="%(ProductVersionFile.Identity)"
-                      Lines="$(RuntimePackProductVersion)"
+                      Lines="$(ProductVersion)"
                       Overwrite="true"
                       Encoding="ASCII" />
-    
+
+    <ItemGroup>
+      <Artifact Include="@(ProductVersionFile)"
+                RelativeBlobPath="Runtime/$(NonStableProductVersion)/%(Filename)%(Extension)" />
+    </ItemGroup>
+  </Target>
+
+  <Target Name="AddRelativeBlobPathToInstallerArtifacts"
+          DependsOnTargets="GetNonStableProductVersion"
+          BeforeTargets="PublishToAzureDevOpsArtifacts"
+          AfterTargets="GenerateChecksumsFromArtifacts">
     <ItemGroup>
-      <ItemsToPushToBlobFeed Include="@(ProductVersionFile)"
-                             IsShipping="false"
-                             PublishFlatContainer="true"
-                             RelativeBlobPath="Runtime/$(RuntimePackProductVersion)/%(Filename)%(Extension)" />
+      <Artifact Condition="'%(Artifact.PublishFlatContainer)' == 'true' and '%(Artifact.RelativeBlobPath)' == ''"
+                RelativeBlobPath="Runtime/$(NonStableProductVersion)/%(Filename)%(Extension)" />
     </ItemGroup>
   </Target>
 
diff --git a/eng/Signing.props b/eng/Signing.props
index f76a7aa22c2481..0c5183db05bbdf 100644
--- a/eng/Signing.props
+++ b/eng/Signing.props
@@ -6,16 +6,13 @@
 
       During post build signing, there are no packages to sign during SignFinalPackages.
     -->
-    <AllowEmptySignList>true</AllowEmptySignList>
+    <AllowEmptySignList Condition="'$(DotNetBuildOrchestrator)' != 'true'">true</AllowEmptySignList>
+    <!-- TODO: Change condition when runtime's official publishing starts using Publishing.proj:
+         https://github.com/dotnet/source-build/issues/4239 -->
+    <EnableDefaultArtifacts Condition="'$(DotNetBuildOrchestrator)' != 'true'">false</EnableDefaultArtifacts>
   </PropertyGroup>
 
   <ItemGroup>
-    <!--
-      Replace the default items to sign with the specific set we want. This allows the build to call
-      Arcade's Sign.proj multiple times for different sets of files as the build progresses.
-    -->
-    <ItemsToSign Remove="@(ItemsToSign)" />
-
     <!-- apphost and comhost template files are not signed, by design. -->
     <FileSignInfo Include="apphost.exe;singlefilehost.exe;comhost.dll" CertificateName="None" />
 
@@ -37,12 +34,6 @@
     <FileSignInfo Include="Mono.Cecil.Pdb.dll" CertificateName="3PartySHA2" />
     <FileSignInfo Include="Mono.Cecil.Rocks.dll" CertificateName="3PartySHA2" />
 
-    <!-- Exclude symbol packages from have a NuGet signature. These are never pushed to NuGet.org or
-         other feeds (in fact, that have identical identity to their non-symbol variant) -->
-    <DownloadedSymbolPackages Include="$(DownloadDirectory)**\*.symbols.nupkg" />
-    <DownloadedSymbolPackagesWithoutPaths Include="@(DownloadedSymbolPackages->'%(Filename)%(Extension)')" />
-    <FileSignInfo Include="@(DownloadedSymbolPackagesWithoutPaths->Distinct())" CertificateName="None" />
-
     <FileExtensionSignInfo Include=".msi" CertificateName="MicrosoftDotNet500" />
     <FileExtensionSignInfo Include=".pkg" CertificateName="8003" />
     <FileExtensionSignInfo Include=".deb;.rpm" CertificateName="LinuxSign" />
@@ -55,7 +46,13 @@
     <FileSignInfo Update="@(FileSignInfo->WithMetadataValue('CertificateName','Microsoft400'))" CertificateName="MicrosoftDotNet500" />
   </ItemGroup>
 
-  <ItemGroup Condition="'$(PrepareArtifacts)' == 'true'">
+  <ItemGroup Condition="'$(EnableDefaultArtifacts)' != 'true'">
+    <!-- Exclude symbol packages from have a NuGet signature. These are never pushed to NuGet.org or
+         other feeds (in fact, that have identical identity to their non-symbol variant) -->
+    <DownloadedSymbolPackages Include="$(DownloadDirectory)**\*.symbols.nupkg" />
+    <DownloadedSymbolPackagesWithoutPaths Include="@(DownloadedSymbolPackages->'%(Filename)%(Extension)')" />
+    <FileSignInfo Include="@(DownloadedSymbolPackagesWithoutPaths->Distinct())" CertificateName="None" />
+
     <ItemsToSignWithPaths Include="$(DownloadDirectory)**\*.msi" />
     <ItemsToSignWithPaths Include="$(DownloadDirectory)**\*.exe" />
     <ItemsToSignWithPaths Include="$(DownloadDirectory)**\*.nupkg" />
@@ -65,4 +62,21 @@
     <ItemsToSignPostBuild Include="@(ItemsToSignWithoutPaths->Distinct())" Condition="'$(PostBuildSign)' == 'true'" />
     <ItemsToSign Include="@(ItemsToSignWithPaths->Distinct())" Condition="'$(PostBuildSign)' != 'true'" />
   </ItemGroup>
+
+  <!-- Include installers -->
+  <ItemGroup Condition="'$(EnableDefaultArtifacts)' == 'true'">
+    <Artifact Include="$(ArtifactsPackagesDir)**\*.tar.gz;
+                       $(ArtifactsPackagesDir)**\*.zip;
+                       $(ArtifactsPackagesDir)**\*.deb;
+                       $(ArtifactsPackagesDir)**\*.rpm;
+                       $(ArtifactsPackagesDir)**\*.pkg;
+                       $(ArtifactsPackagesDir)**\*.exe;
+                       $(ArtifactsPackagesDir)**\*.msi"
+              Exclude="$(ArtifactsPackagesDir)**\Symbols.runtime.tar.gz"
+              IsShipping="$([System.String]::Copy('%(RecursiveDir)').StartsWith('Shipping'))">
+      <!-- Exclude wixpack.zip files from checksum generation -->
+      <ChecksumPath Condition="$([System.String]::Copy('%(Filename)%(Extension)').EndsWith('.wixpack.zip')) != 'true'">%(FullPath).sha512</ChecksumPath>
+    </Artifact>
+  </ItemGroup>
+
 </Project>
diff --git a/src/installer/prepare-artifacts.proj b/src/installer/prepare-artifacts.proj
index f00a65b86896b3..9042c9d6f46c41 100644
--- a/src/installer/prepare-artifacts.proj
+++ b/src/installer/prepare-artifacts.proj
@@ -15,12 +15,7 @@
 
   <!-- When doing post build sign, pull in the arcade sign.props file, which will
        create some initial sign groups and then pulls in the repo's custom Signing.props overrides.
-       Before importing the signing props. Set PrepareArtifactst=true. Depending on context (SDK project vs. not),
-       the initial imports of livebuilds.targets and Configuration.props are already imported and thus cannot
-       be imported again. Without those imports, the globbing of files to sign will not work properly. -->
-  <PropertyGroup>
-    <PrepareArtifacts>true</PrepareArtifacts>
-  </PropertyGroup>
+       Before importing the Signing props. -->
   <Import Project="../tools/Sign.props" Sdk="Microsoft.DotNet.Arcade.Sdk" />
 
   <Import Project="$(RepositoryEngineeringDir)Publishing.props" Condition="Exists('$(RepositoryEngineeringDir)Publishing.props')" />
@@ -78,8 +73,7 @@
       Projects="$(ArcadeSdkSignProject)"
       Targets="Sign"
       Properties="
-        DownloadDirectory=$(DownloadDirectory);
-        PrepareArtifacts=$(PrepareArtifacts)" />
+        DownloadDirectory=$(DownloadDirectory)" />
   </Target>
 
   <!--