diff --git a/.vsts-dotnet-ci.yml b/.vsts-dotnet-ci.yml
index 2b80c13bf04..fe46fcdcd91 100644
--- a/.vsts-dotnet-ci.yml
+++ b/.vsts-dotnet-ci.yml
@@ -248,3 +248,9 @@ jobs:
       ArtifactName: 'MonoOnMac test logs'
     continueOnError: true
     condition: always()
+
+- template: /eng/common/templates/job/source-build.yml
+  parameters:
+    platform:
+      name: 'Managed'
+      container: 'mcr.microsoft.com/dotnet-buildtools/prereqs:centos-7-3e800f1-20190501005343'
diff --git a/.vsts-dotnet.yml b/.vsts-dotnet.yml
index dae4ff8d4aa..bd006c55f5d 100644
--- a/.vsts-dotnet.yml
+++ b/.vsts-dotnet.yml
@@ -237,12 +237,19 @@ stages:
       displayName: Execute cleanup tasks
       condition: succeededOrFailed()
 
+  - template: /eng/common/templates/job/source-build.yml
+    parameters:
+      platform:
+        name: 'Managed'
+        container: 'mcr.microsoft.com/dotnet-buildtools/prereqs:centos-7-3e800f1-20190501005343'
+
   - template: /eng/common/templates/job/publish-build-assets.yml
     parameters:
       enablePublishBuildArtifacts: true
       publishUsingPipelines: true
       dependsOn:
         - Windows_NT
+        - Source_Build_Managed
       pool:
         vmImage: vs2017-win2016
 
diff --git a/eng/AfterSigning.targets b/eng/AfterSigning.targets
index e699c81e7dc..0bc6b1db9cd 100644
--- a/eng/AfterSigning.targets
+++ b/eng/AfterSigning.targets
@@ -1,5 +1,5 @@
 <Project>
-    <Target Name="CopyAMD64Symbols" Condition="'$(OfficialBuild)' == 'true'" BeforeTargets="Build">
+    <Target Name="CopyAMD64Symbols" Condition="'$(OfficialBuild)' == 'true' AND '$(ArcadeBuildFromSource)' != 'true'" BeforeTargets="Build">
         <Copy 
             SourceFiles="$(ArtifactsBinDir)MSBuild\x64\Release\net472\MSBuild.pdb"
             DestinationFolder="$(ArtifactsSymStoreDirectory)\MSBuild\net472\amd64"
diff --git a/eng/Packages.props b/eng/Packages.props
index bde4be1897c..e56a9b1e2d3 100644
--- a/eng/Packages.props
+++ b/eng/Packages.props
@@ -25,7 +25,7 @@
     <PackageReference Update="System.Configuration.ConfigurationManager" Version="4.7.0" />
     <PackageReference Update="System.Memory" Version="4.5.4" />
     <PackageReference Update="System.Reflection.Metadata" Version="1.6.0" />
-    <PackageReference Update="System.Resources.Extensions" Version="4.6.0" />
+    <PackageReference Update="System.Resources.Extensions" Version="$(SystemResourcesExtensionsPackageVersion)" />
     <PackageReference Update="System.Runtime.CompilerServices.Unsafe" Version="5.0.0"/>
     <PackageReference Update="System.Security.Cryptography.Pkcs" Version="4.7.0" />
     <PackageReference Update="System.Security.Cryptography.Xml" Version="4.7.0" />
diff --git a/eng/SourceBuild.props b/eng/SourceBuild.props
new file mode 100644
index 00000000000..7218b37ccf0
--- /dev/null
+++ b/eng/SourceBuild.props
@@ -0,0 +1,13 @@
+<Project>
+
+  <PropertyGroup>
+    <GitHubRepositoryName>msbuild</GitHubRepositoryName>
+  </PropertyGroup>
+
+  <Target Name="ConfigureInnerBuildArgs" BeforeTargets="GetSourceBuildCommandConfiguration">
+    <PropertyGroup>
+      <InnerBuildArgs>$(InnerBuildArgs) /p:Projects="$(InnerSourceBuildRepoRoot)\MSBuild.SourceBuild.slnf"</InnerBuildArgs>
+    </PropertyGroup>
+  </Target>
+
+</Project>
diff --git a/eng/SourceBuildPrebuiltBaseline.xml b/eng/SourceBuildPrebuiltBaseline.xml
new file mode 100644
index 00000000000..c1b6dfbf053
--- /dev/null
+++ b/eng/SourceBuildPrebuiltBaseline.xml
@@ -0,0 +1,5 @@
+<UsageData>
+  <IgnorePatterns>
+    <UsagePattern IdentityGlob="*/*" />
+  </IgnorePatterns>
+</UsageData>
diff --git a/eng/Version.Details.xml b/eng/Version.Details.xml
index 8a5f0ed8f09..6f7ab023c5a 100644
--- a/eng/Version.Details.xml
+++ b/eng/Version.Details.xml
@@ -4,6 +4,7 @@
     <Dependency Name="Microsoft.DotNet.Arcade.Sdk" Version="6.0.0-beta.21281.1">
       <Uri>https://github.com/dotnet/arcade</Uri>
       <Sha>c7d6bd607715f334cda90e01967bb0c02dee09be</Sha>
+      <SourceBuild RepoName="arcade" ManagedOnly="true"/>
     </Dependency>
     <Dependency Name="NuGet.Build.Tasks" Version="6.0.0-preview.1.66">
       <Uri>https://github.com/nuget/nuget.client</Uri>
diff --git a/eng/Versions.props b/eng/Versions.props
index 768180429cc..8fb1af53f90 100644
--- a/eng/Versions.props
+++ b/eng/Versions.props
@@ -23,6 +23,7 @@
   </PropertyGroup>
   <!-- Production Dependencies -->
   <PropertyGroup>
+    <SystemResourcesExtensionsPackageVersion>4.6.0</SystemResourcesExtensionsPackageVersion>
   </PropertyGroup>
   <!-- Toolset Dependencies -->
   <PropertyGroup>
diff --git a/src/MSBuild/MSBuild.csproj b/src/MSBuild/MSBuild.csproj
index 912ca4f12ef..34b768cd9c1 100644
--- a/src/MSBuild/MSBuild.csproj
+++ b/src/MSBuild/MSBuild.csproj
@@ -14,7 +14,7 @@
     <!-- Set RuntimeIdentifiers so that NuGet will restore for both AnyCPU as well as x86 and x64.
          This is important for the MSBuild.VSSetup project, which "references" both the x86 and x64
          versions of this project -->
-    <RuntimeIdentifiers>win7-x86;win7-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers Condition="'$(DotNetBuildFromSource)' != 'true'">win7-x86;win7-x64</RuntimeIdentifiers>
 
     <EnableDefaultItems>false</EnableDefaultItems>
     <AllowUnsafeBlocks>true</AllowUnsafeBlocks>
diff --git a/src/MSBuildTaskHost/MSBuildTaskHost.csproj b/src/MSBuildTaskHost/MSBuildTaskHost.csproj
index 37d0b1c70d6..7890d4c0e92 100644
--- a/src/MSBuildTaskHost/MSBuildTaskHost.csproj
+++ b/src/MSBuildTaskHost/MSBuildTaskHost.csproj
@@ -13,7 +13,7 @@
     <!-- Set RuntimeIdentifiers so that NuGet will restore for both AnyCPU as well as x86 and x64.
          This is important for the MSBuild.VSSetup project, which "references" both the x86 and x64
          versions of this project -->
-    <RuntimeIdentifiers>win7-x86;win7-x64</RuntimeIdentifiers>
+    <RuntimeIdentifiers Condition="'$(DotNetBuildFromSource)' != 'true'">win7-x86;win7-x64</RuntimeIdentifiers>
 
     <EnableDefaultItems>false</EnableDefaultItems>
     <DefineConstants>$(DefineConstants);CLR2COMPATIBILITY;TASKHOST</DefineConstants>