diff --git a/build/SharedFx.targets b/build/SharedFx.targets
index b872a2b659..0ccf8b7a4e 100644
--- a/build/SharedFx.targets
+++ b/build/SharedFx.targets
@@ -6,6 +6,7 @@
     <BuildSharedFxDependsOn>_BuildSharedFxProjects;TestSharedFx</BuildSharedFxDependsOn>
     <BuildSharedFxDependsOn Condition="'$(TestOnly)' != 'true'">$(BuildSharedFxDependsOn);CodeSign</BuildSharedFxDependsOn>
     <RedistNetCorePath>$(IntermediateDir)ar\$(SharedFxRid)\</RedistNetCorePath>
+    <BuildRuntimeSiteExtension Condition="'$(SharedFxRid)' == 'win-x64' OR '$(SharedFxRid)' == 'win-x86'">true</BuildRuntimeSiteExtension>
   </PropertyGroup>
 
   <ItemGroup>
@@ -13,6 +14,7 @@
     <ProjectToBuild Include="$(RepositoryRoot)src\Framework\**\*.shfxproj" />
     <ProjectToBuild Include="$(UnitTestFxProject)" />
     <ProjectToBuild Condition=" '$(BuildRuntimeArchive)' != 'false' " Include="$(RepositoryRoot)src\Installers\Archive\*.*proj" />
+    <ProjectToBuild Condition=" '$(BuildRuntimeSiteExtension)' == 'true' " Include="$(RepositoryRoot)src\Installers\RuntimeSiteExtension\Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj" />
     <ProjectToBuild Condition=" '$(SharedFxRid)' == 'linux-x64' AND '$(LinuxInstallerType)' == 'deb' " Include="$(RepositoryRoot)src\Installers\Debian\*.*proj" />
     <ProjectToBuild Condition=" '$(SharedFxRid)' == 'linux-x64' AND '$(LinuxInstallerType)' == 'rpm' " Include="$(RepositoryRoot)src\Installers\Rpm\*.*proj" />
   </ItemGroup>
@@ -26,6 +28,7 @@
       <FilesToSign Include="$(BuildDir)Microsoft.AspNetCore.App.$(PackageVersion).nupkg" Certificate="$(PackageSigningCertName)" />
       <FilesToSign Include="$(BuildDir)runtime.$(SharedFxRid).Microsoft.AspNetCore.App.$(PackageVersion).nupkg" Certificate="$(PackageSigningCertName)" />
       <FilesToSign Include="$(BuildDir)runtime.$(SharedFxRid).Microsoft.AspNetCore.App.$(PackageVersion).symbols.nupkg" Certificate="$(PackageSigningCertName)" />
+      <FilesToSign Include="$(BuildDir)AspNetCoreRuntime.3.0.$(SharedFxArchitecture).$(PackageVersion).nupkg" Condition=" '$(BuildRuntimeSiteExtension)' == 'true' " Certificate="$(PackageSigningCertName)" />
     </ItemGroup>
 
     <!-- These files should already be signed by the .NET Core team. They have to be listed again here because we recreate a redistributable which includes the Microsoft.NETCore.App runtime. -->
@@ -44,8 +47,10 @@
       <SharedFxBuildProperties>
         $(BuildProperties);
         SharedFxRid=$(SharedFxRid);
+        SharedFxArchitecture=$(SharedFxArchitecture);
         DotNetRestoreSourcePropsPath=$(GeneratedRestoreSourcesPropsPath);
-        DotNetPackageVersionPropsPath=$(GeneratedPackageVersionPropsPath)
+        DotNetPackageVersionPropsPath=$(GeneratedPackageVersionPropsPath);
+        PackageVersion=$(PackageVersion)
       </SharedFxBuildProperties>
     </PropertyGroup>
 
diff --git a/build/artifacts.props b/build/artifacts.props
index 9df9a579f9..d4e4123a5a 100644
--- a/build/artifacts.props
+++ b/build/artifacts.props
@@ -13,6 +13,7 @@
   </ItemDefinitionGroup>
 
   <ItemGroup>
+    <PackageArtifact Include="AspNetCoreRuntime.3.0.$(SharedFxArchitecture)" Category="noship" Condition=" '$(OS)' == 'Windows_NT' " />
     <PackageArtifact Include="dotnet-dev-certs" Category="ship" />
     <PackageArtifact Include="dotnet-sql-cache" Category="ship" />
     <PackageArtifact Include="dotnet-user-secrets" Category="ship" />
diff --git a/eng/targets/RuntimeIdentifiers.props b/eng/targets/RuntimeIdentifiers.props
index 56ce1f0e9c..b38ec14b94 100644
--- a/eng/targets/RuntimeIdentifiers.props
+++ b/eng/targets/RuntimeIdentifiers.props
@@ -6,6 +6,8 @@
     <SharedFxRid Condition=" '$(SharedFxRid)' == '' AND $([MSBuild]::IsOSPlatform('OSX'))">osx-x64</SharedFxRid>
     <SharedFxRid Condition=" '$(SharedFxRid)' == '' AND $([MSBuild]::IsOSPlatform('Linux'))">linux-x64</SharedFxRid>
 
+    <SharedFxArchitecture Condition="'$(SharedFxArchitecture)' == ''">$(SharedFxRid.Substring($([MSBuild]::Add($(SharedFxRid.LastIndexOf('-')), 1))))</SharedFxArchitecture>
+
     <!-- Defines the default RID of the platform currently running the build. -->
     <HostRid Condition=" '$(HostRid)' == '' AND $([MSBuild]::IsOSPlatform('Windows'))">win-x64</HostRid>
     <HostRid Condition=" '$(HostRid)' == '' AND $([MSBuild]::IsOSPlatform('OSX'))">osx-x64</HostRid>
diff --git a/src/Installers/RuntimeSiteExtension/Directory.Build.targets b/src/Installers/RuntimeSiteExtension/Directory.Build.targets
new file mode 100644
index 0000000000..758cb49f05
--- /dev/null
+++ b/src/Installers/RuntimeSiteExtension/Directory.Build.targets
@@ -0,0 +1,38 @@
+<Project>
+
+  <Import Project="$([MSBuild]::GetDirectoryNameOfFileAbove($(MSBuildThisFileDirectory)..\, Directory.Build.targets))\Directory.Build.targets" />
+
+  <PropertyGroup>
+    <!-- There is no build output -->
+    <IncludeBuildOutput>false</IncludeBuildOutput>
+    <!-- There are no symbols. -->
+    <IncludeSymbols>false</IncludeSymbols>
+    <!-- There is no API to check -->
+    <EnableApiCheck>false</EnableApiCheck>
+    <!-- Manually control dependencies -->
+    <DisableImplicitFrameworkReferences>true</DisableImplicitFrameworkReferences>
+    <!-- The only build output of a pkgproj is the project -->
+    <GeneratePackageOnBuild>true</GeneratePackageOnBuild>
+    <!-- There is no documentation  -->
+    <GenerateDocumentationFile>false</GenerateDocumentationFile>
+    <!-- There is no documentation  -->
+    <RunPackageAnalysis>false</RunPackageAnalysis>
+
+  </PropertyGroup>
+
+  <Target Name="GetArtifactInfo" Returns="@(ArtifactInfo)">
+    <ItemGroup>
+      <ArtifactInfo Include="$(TargetPath)">
+        <ArtifactType>NuGetPackage</ArtifactType>
+        <PackageId>$(PackageId)</PackageId>
+        <Version>$(PackageVersion)</Version>
+      </ArtifactInfo>
+    </ItemGroup>
+  </Target>
+
+  <Import Project="$(RepositoryRoot)build\tasks\RepoTasks.tasks" />
+
+  <Target Name="CopyFilesToOutputDirectory" />
+  <Target Name="CoreCompile" />
+  <Target Name="CreateManifestResourceNames" />
+</Project>
diff --git a/src/Installers/RuntimeSiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj b/src/Installers/RuntimeSiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj
new file mode 100644
index 0000000000..352a1b8443
--- /dev/null
+++ b/src/Installers/RuntimeSiteExtension/Microsoft.AspNetCore.Runtime.SiteExtension.pkgproj
@@ -0,0 +1,47 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net461</TargetFramework>
+    <PackageType>AzureSiteExtension</PackageType>
+    <ContentTargetFolders>content</ContentTargetFolders>
+
+    <TrimmedVersion>$(VersionPrefix.Substring(0, $(VersionPrefix.LastIndexOf('.'))))</TrimmedVersion>
+    <Title>ASP.NET Core $(TrimmedVersion) ($(SharedFxArchitecture)) Runtime </Title>
+    <Description>This site extension installs Microsoft.AspNetCore.All, Microsoft.AspNetCore.App and Microsoft.NetCore.App shared runtimes.</Description>
+    <PackageTags>aspnetcore;AzureSiteExtension</PackageTags>
+    <PackageId>AspNetCoreRuntime.$(TrimmedVersion).$(SharedFxArchitecture)</PackageId>
+    <NoPackageAnalysis>true</NoPackageAnalysis>
+    <DotNetUnpackFolder>$(RepositoryRoot)obj\ar\$(SharedFxRid)\</DotNetUnpackFolder>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <Content Include="applicationHost.xdt" />
+    <Content Include="scmApplicationHost.xdt" />
+    <Content Include="install.cmd" />
+    <Content Include="..\..\SiteExtensions\src\Microsoft.Web.Xdt.Extensions\bin\$(Configuration)\net461\Microsoft.Web.Xdt.Extensions.dll" PackagePath="content" />
+
+    <Content Include="$(DotNetUnpackFolder)\**\*.*" Condition="$(DotNetAssetRootUrl) != ''" PackagePath="content\%(RecursiveDir)%(FileName)%(Extension)" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(SharedFxArchitecture)' == 'x86'">
+    <Content Include="$(AspNetCoreModuleX86Location)" PackagePath="content\ancm" />
+    <Content Include="$(OutOfProcessRequestHandlerX86Location)" PackagePath="content\ancm\$(AspNetCoreModuleOutOfProcessVersion)" />
+  </ItemGroup>
+
+  <ItemGroup Condition="'$(SharedFxArchitecture)' == 'x64'">
+    <Content Include="$(AspNetCoreModuleX64Location)" PackagePath="content\ancm" />
+    <Content Include="$(OutOfProcessRequestHandlerX64Location)" PackagePath="content\ancm\$(AspNetCoreModuleOutOfProcessVersion)" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\SiteExtensions\src\Microsoft.Web.Xdt.Extensions\Microsoft.Web.Xdt.Extensions.csproj" PrivateAssets="All" ReferenceOutputAssembly="False"/>
+    <!-- Make sure redist folder is built and ready -->
+    <ProjectReference Include="..\Archive\Archive.Redist.zipproj" PrivateAssets="All" ReferenceOutputAssembly="False" />
+    <PackageReference Include="Microsoft.AspNetCore.AspNetCoreModuleV2" Version="$(PackageVersion)" />
+  </ItemGroup>
+
+  <Target Name="CopyFilesToOutputDirectory" />
+  <Target Name="CoreCompile" />
+  <Target Name="CreateManifestResourceNames" />
+
+</Project>
\ No newline at end of file
diff --git a/src/Installers/RuntimeSiteExtension/applicationHost.xdt b/src/Installers/RuntimeSiteExtension/applicationHost.xdt
new file mode 100644
index 0000000000..159bc8d646
--- /dev/null
+++ b/src/Installers/RuntimeSiteExtension/applicationHost.xdt
@@ -0,0 +1,29 @@
+<?xml version="1.0"?>
+<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
+
+  <xdt:Import path="%XDT_EXTENSIONPATH%\Microsoft.Web.Xdt.Extensions.dll"
+              namespace="Microsoft.Web.Xdt.Extensions" />
+
+    <system.webServer xdt:Transform="InsertIfMissing">
+      <runtime xdt:Transform="InsertIfMissing" >
+        <environmentVariables xdt:Transform="InsertIfMissing">
+          <add name="PATH" value="%XDT_EXTENSIONPATH%;%USERPROFILE%\.dotnet\tools;%PATH%" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing"  />
+          <add name="DOTNET_SKIP_FIRST_TIME_EXPERIENCE" value="1" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing"  />
+          <add name="DOTNET_ROOT" value="%XDT_EXTENSIONPATH%" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing"  />
+        </environmentVariables>
+      </runtime>
+
+      <globalModules>
+        <add name="AspNetCoreModuleV2" image="%XDT_EXTENSIONPATH%\ancm\aspnetcorev2.dll" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing" />
+      </globalModules>
+    </system.webServer>
+
+    <location>
+      <system.webServer>
+        <modules>
+          <add name="AspNetCoreModuleV2" lockItem="true" xdt:Locator="Match(name)" xdt:Transform="InsertIfMissing" />
+        </modules>
+      </system.webServer>
+    </location>
+
+</configuration>
\ No newline at end of file
diff --git a/src/Installers/RuntimeSiteExtension/install.cmd b/src/Installers/RuntimeSiteExtension/install.cmd
new file mode 100644
index 0000000000..bdca3efa75
--- /dev/null
+++ b/src/Installers/RuntimeSiteExtension/install.cmd
@@ -0,0 +1,16 @@
+FOR /R %%x IN (*.nupkg_) DO REN "%%x" "*.nupkg"
+
+
+SET DOTNET=D:\Program Files (x86)\dotnet
+SET RUNTIMES=%DOTNET%\shared\Microsoft.NETCore.App
+
+IF "%ASPNETCORE_COPY_EXISTING_RUNTIMES%" NEQ "1" EXIT /b 0
+
+robocopy "%DOTNET%" "." /E /XC /XN /XO /NFL /NDL ^
+    /XD "%DOTNET%\sdk" ^
+    /XD "%RUNTIMES%\1.0.8" ^
+    /XD "%RUNTIMES%\1.1.5" ^
+    /XD "%RUNTIMES%\2.0.3"
+
+IF %errorlevel% geq 8 EXIT /b 1
+EXIT /b 0
\ No newline at end of file
diff --git a/src/Installers/RuntimeSiteExtension/scmApplicationHost.xdt b/src/Installers/RuntimeSiteExtension/scmApplicationHost.xdt
new file mode 100644
index 0000000000..a8dd367f9f
--- /dev/null
+++ b/src/Installers/RuntimeSiteExtension/scmApplicationHost.xdt
@@ -0,0 +1,5 @@
+<?xml version="1.0"?>
+<configuration xmlns:xdt="http://schemas.microsoft.com/XML-Document-Transform">
+  <!-- This file exists to prevent applicationHost.xdt from being applied to scm host that runs
+      other dotnet processes (dotnet build, csc etc. )-->
+</configuration>
\ No newline at end of file