diff --git a/.github/actions/spell-check/expect.txt b/.github/actions/spell-check/expect.txt
index 4a208a400a..02622eb731 100644
--- a/.github/actions/spell-check/expect.txt
+++ b/.github/actions/spell-check/expect.txt
@@ -1072,6 +1072,7 @@ Metacharacter
 metadatamatters
 Metadatas
 metafile
+metapackage
 mfc
 Mgmt
 Microwaved
diff --git a/.pipelines/UpdateVersions.ps1 b/.pipelines/UpdateVersions.ps1
index 4e68663236..72b4f25cad 100644
--- a/.pipelines/UpdateVersions.ps1
+++ b/.pipelines/UpdateVersions.ps1
@@ -13,9 +13,36 @@ Param(
 
   # Root folder Path for processing
   [Parameter(Mandatory=$False,Position=4)]
-  [string]$sourceLink = "https://microsoft.pkgs.visualstudio.com/ProjectReunion/_packaging/Project.Reunion.nuget.internal/nuget/v3/index.json"
+  [string]$sourceLink = "https://microsoft.pkgs.visualstudio.com/ProjectReunion/_packaging/Project.Reunion.nuget.internal/nuget/v3/index.json",
+
+  # Use Azure Pipeline artifact as source for metapackage
+  [Parameter(Mandatory=$False,Position=5)]
+  [boolean]$useArtifactSource = $False,
+
+  # Azure DevOps organization URL
+  [Parameter(Mandatory=$False,Position=6)]
+  [string]$azureDevOpsOrg = "https://dev.azure.com/microsoft",
+
+  # Azure DevOps project name
+  [Parameter(Mandatory=$False,Position=7)]
+  [string]$azureDevOpsProject = "ProjectReunion",
+
+  # Pipeline build ID (or "latest" for latest build)
+  [Parameter(Mandatory=$False,Position=8)]
+  [string]$buildId = "",
+
+  # Artifact name containing the NuGet packages
+  [Parameter(Mandatory=$False,Position=9)]
+  [string]$artifactName = "WindowsAppSDK_Nuget_And_MSIX",
+
+  # Metapackage name to look for in artifact
+  [Parameter(Mandatory=$False,Position=10)]
+  [string]$metaPackageName = "Microsoft.WindowsAppSDK"
 )
 
+# Script-level constants
+$script:PackageVersionRegex = '^(.+?)\.(\d+\..*)$'
+
 
 
 function Read-FileWithEncoding {
@@ -57,7 +84,7 @@ function Add-NuGetSourceAndMapping {
 
     # Ensure packageSources exists
     if (-not $Xml.configuration.packageSources) {
-        $Xml.configuration.AppendChild($Xml.CreateElement("packageSources")) | Out-Null
+        $null = $Xml.configuration.AppendChild($Xml.CreateElement("packageSources"))
     }
     $sources = $Xml.configuration.packageSources
 
@@ -66,13 +93,13 @@ function Add-NuGetSourceAndMapping {
     if (-not $sourceNode) {
         $sourceNode = $Xml.CreateElement("add")
         $sourceNode.SetAttribute("key", $Key)
-        $sources.AppendChild($sourceNode) | Out-Null
+        $null = $sources.AppendChild($sourceNode)
     }
     $sourceNode.SetAttribute("value", $Value)
 
     # Ensure packageSourceMapping exists
     if (-not $Xml.configuration.packageSourceMapping) {
-        $Xml.configuration.AppendChild($Xml.CreateElement("packageSourceMapping")) | Out-Null
+        $null = $Xml.configuration.AppendChild($Xml.CreateElement("packageSourceMapping"))
     }
     $mapping = $Xml.configuration.packageSourceMapping
 
@@ -80,7 +107,7 @@ function Add-NuGetSourceAndMapping {
     $invalidNodes = $mapping.SelectNodes("packageSource[not(@key) or @key='']")
     if ($invalidNodes) {
         foreach ($node in $invalidNodes) {
-            $mapping.RemoveChild($node) | Out-Null
+            $null = $mapping.RemoveChild($node)
         }
     }
 
@@ -91,9 +118,9 @@ function Add-NuGetSourceAndMapping {
         $mappingSource.SetAttribute("key", $Key)
         # Insert at top for priority
         if ($mapping.HasChildNodes) {
-            $mapping.InsertBefore($mappingSource, $mapping.FirstChild) | Out-Null
+            $null = $mapping.InsertBefore($mappingSource, $mapping.FirstChild)
         } else {
-            $mapping.AppendChild($mappingSource) | Out-Null
+            $null = $mapping.AppendChild($mappingSource)
         }
     }
     
@@ -110,14 +137,273 @@ function Add-NuGetSourceAndMapping {
     foreach ($pattern in $Patterns) {
         $pkg = $Xml.CreateElement("package")
         $pkg.SetAttribute("pattern", $pattern)
-        $mappingSource.AppendChild($pkg) | Out-Null
+        $null = $mappingSource.AppendChild($pkg)
     }
 }
 
+function Download-ArtifactFromPipeline {
+    param (
+        [string]$Organization,
+        [string]$Project,
+        [string]$BuildId,
+        [string]$ArtifactName,
+        [string]$OutputDir
+    )
+
+    Write-Host "Downloading artifact '$ArtifactName' from build $BuildId..."
+    $null = New-Item -ItemType Directory -Path $OutputDir -Force
+
+    try {
+        # Authenticate with Azure DevOps using System Access Token (if available)
+        if ($env:SYSTEM_ACCESSTOKEN) {
+            Write-Host "Authenticating with Azure DevOps using System Access Token..."
+            $env:AZURE_DEVOPS_EXT_PAT = $env:SYSTEM_ACCESSTOKEN
+        } else {
+            Write-Host "No SYSTEM_ACCESSTOKEN found, assuming az CLI is already authenticated..."
+        }
+
+        # Use az CLI to download artifact
+        & az pipelines runs artifact download `
+            --organization $Organization `
+            --project $Project `
+            --run-id $BuildId `
+            --artifact-name $ArtifactName `
+            --path $OutputDir
+
+        if ($LASTEXITCODE -eq 0) {
+            Write-Host "Successfully downloaded artifact to $OutputDir"
+            return $true
+        } else {
+            Write-Warning "Failed to download artifact. Exit code: $LASTEXITCODE"
+            return $false
+        }
+    } catch {
+        Write-Warning "Error downloading artifact: $_"
+        return $false
+    }
+}
+
+function Get-NuspecDependencies {
+    param (
+        [string]$NupkgPath,
+        [string]$TargetFramework = ""
+    )
+
+    $tempDir = Join-Path $env:TEMP "nuspec_parse_$(Get-Random)"
+
+    try {
+        # Extract .nupkg (it's a zip file)
+        # Workaround: Expand-Archive may not recognize .nupkg extension, so copy to .zip first
+        $tempZip = Join-Path $env:TEMP "temp_$(Get-Random).zip"
+        Copy-Item $NupkgPath -Destination $tempZip -Force
+        Expand-Archive -Path $tempZip -DestinationPath $tempDir -Force
+        Remove-Item $tempZip -Force -ErrorAction SilentlyContinue
+
+        # Find .nuspec file
+        $nuspecFile = Get-ChildItem -Path $tempDir -Filter "*.nuspec" -Recurse | Select-Object -First 1
+
+        if (-not $nuspecFile) {
+            Write-Warning "No .nuspec file found in $NupkgPath"
+            return @{}
+        }
+
+        [xml]$nuspec = Get-Content $nuspecFile.FullName
+
+        # Extract package info
+        $packageId = $nuspec.package.metadata.id
+        $version = $nuspec.package.metadata.version
+        Write-Host "Parsing $packageId version $version"
+
+        # Parse dependencies
+        $dependencies = @{}
+        $depGroups = $nuspec.package.metadata.dependencies.group
+
+        if ($depGroups) {
+            # Dependencies are grouped by target framework
+            foreach ($group in $depGroups) {
+                $fx = $group.targetFramework
+                Write-Host "  Target Framework: $fx"
+
+                foreach ($dep in $group.dependency) {
+                    $depId = $dep.id
+                    $depVer = $dep.version
+                    # Remove version range brackets if present (e.g., "[2.0.0]" -> "2.0.0")
+                    $depVer = $depVer -replace '[\[\]]', ''
+                    $dependencies[$depId] = $depVer
+                    Write-Host "    - ${depId} : ${depVer}"
+                }
+            }
+        } else {
+            # No grouping, direct dependencies
+            $deps = $nuspec.package.metadata.dependencies.dependency
+            if ($deps) {
+                foreach ($dep in $deps) {
+                    $depId = $dep.id
+                    $depVer = $dep.version
+                    $depVer = $depVer -replace '[\[\]]', ''
+                    $dependencies[$depId] = $depVer
+                    Write-Host "  - ${depId} : ${depVer}"
+                }
+            }
+        }
+
+        return $dependencies
+    }
+    catch {
+        Write-Warning "Failed to parse nuspec: $_"
+        return @{}
+    }
+    finally {
+        Remove-Item $tempDir -Recurse -Force -ErrorAction SilentlyContinue
+    }
+}
+
+function Resolve-ArtifactBasedDependencies {
+    param (
+        [string]$ArtifactDir,
+        [string]$MetaPackageName,
+        [string]$SourceUrl,
+        [string]$OutputDir
+    )
+
+    Write-Host "Resolving dependencies from artifact-based metapackage..."
+    $null = New-Item -ItemType Directory -Path $OutputDir -Force
+
+    # Find the metapackage in artifact
+    $metaNupkg = Get-ChildItem -Path $ArtifactDir -Recurse -Filter "$MetaPackageName.*.nupkg" |
+                 Where-Object { $_.Name -notmatch "Runtime" } |
+                 Select-Object -First 1
+
+    if (-not $metaNupkg) {
+        Write-Warning "Metapackage $MetaPackageName not found in artifact"
+        return @{}
+    }
+
+    # Extract version from filename
+    if ($metaNupkg.Name -match "$MetaPackageName\.(.+)\.nupkg") {
+        $metaVersion = $Matches[1]
+        Write-Host "Found metapackage: $MetaPackageName version $metaVersion"
+    } else {
+        Write-Warning "Could not extract version from $($metaNupkg.Name)"
+        return @{}
+    }
+
+    # Parse dependencies from metapackage
+    $dependencies = Get-NuspecDependencies -NupkgPath $metaNupkg.FullName
+
+    # Copy metapackage to output directory
+    Copy-Item $metaNupkg.FullName -Destination $OutputDir -Force
+    Write-Host "Copied metapackage to $OutputDir"
+
+    # Prepare package versions hashtable - initialize with metapackage version
+    $packageVersions = @{ $MetaPackageName = $metaVersion }
+
+    # Copy Runtime package from artifact (it's not in feed) and extract its version
+    $runtimeNupkg = Get-ChildItem -Path $ArtifactDir -Recurse -Filter "$MetaPackageName.Runtime.*.nupkg" | Select-Object -First 1
+    if ($runtimeNupkg) {
+        Copy-Item $runtimeNupkg.FullName -Destination $OutputDir -Force
+        Write-Host "Copied Runtime package to $OutputDir"
+
+        # Extract version from Runtime package filename
+        if ($runtimeNupkg.Name -match "$MetaPackageName\.Runtime\.(.+)\.nupkg") {
+            $runtimeVersion = $Matches[1]
+            $packageVersions["$MetaPackageName.Runtime"] = $runtimeVersion
+            Write-Host "Extracted Runtime package version: $runtimeVersion"
+        } else {
+            Write-Warning "Could not extract version from Runtime package: $($runtimeNupkg.Name)"
+        }
+    }
+
+    # Download other dependencies from feed (excluding Runtime as it's already copied)
+    # Create temp nuget.config that includes both local packages and remote feed
+    # This allows NuGet to find packages already copied from artifact
+    $tempConfig = Join-Path $env:TEMP "nuget_artifact_$(Get-Random).config"
+    $tempConfigContent = @"
+<?xml version='1.0' encoding='utf-8'?>
+<configuration>
+  <packageSources>
+    <clear />
+    <add key='LocalPackages' value='$OutputDir' />
+    <add key='RemoteFeed' value='$SourceUrl' />
+  </packageSources>
+</configuration>
+"@
+    Set-Content -Path $tempConfig -Value $tempConfigContent
+
+    try {
+        foreach ($depId in $dependencies.Keys) {
+            # Skip Runtime as it's already copied from artifact
+            if ($depId -like "*Runtime*") {
+                # Don't overwrite the version we extracted from the Runtime package filename
+                if (-not $packageVersions.ContainsKey($depId)) {
+                    $packageVersions[$depId] = $dependencies[$depId]
+                }
+                Write-Host "Skipping $depId (already in artifact)"
+                continue
+            }
+
+            $depVersion = $dependencies[$depId]
+            Write-Host "Downloading dependency: $depId version $depVersion from feed..."
+
+            & nuget install $depId `
+                -Version $depVersion `
+                -ConfigFile $tempConfig `
+                -OutputDirectory $OutputDir `
+                -NonInteractive `
+                -NoCache `
+                | Out-Null
+
+            if ($LASTEXITCODE -eq 0) {
+                $packageVersions[$depId] = $depVersion
+                Write-Host "  Successfully downloaded $depId"
+            } else {
+                Write-Warning "  Failed to download $depId version $depVersion"
+            }
+        }
+    }
+    finally {
+        Remove-Item $tempConfig -Force -ErrorAction SilentlyContinue
+    }
+
+    # Parse all downloaded packages to get actual versions
+    $directories = Get-ChildItem -Path $OutputDir -Directory
+    $allLocalPackages = @()
+
+    # Add metapackage and runtime to the list (they are .nupkg files, not directories)
+    $allLocalPackages += $MetaPackageName
+    if ($packageVersions.ContainsKey("$MetaPackageName.Runtime")) {
+        $allLocalPackages += "$MetaPackageName.Runtime"
+    }
+
+    foreach ($dir in $directories) {
+        if ($dir.Name -match $script:PackageVersionRegex) {
+            $pkgId = $Matches[1]
+            $pkgVer = $Matches[2]
+            $allLocalPackages += $pkgId
+            if (-not $packageVersions.ContainsKey($pkgId)) {
+                $packageVersions[$pkgId] = $pkgVer
+            }
+        }
+    }
+
+    # Update nuget.config dynamically during pipeline execution
+    # This modification is temporary and won't be committed back to the repo
+    $nugetConfig = Join-Path $rootPath "nuget.config"
+    $configData = Read-FileWithEncoding -Path $nugetConfig
+    [xml]$xml = $configData.Content
+
+    Add-NuGetSourceAndMapping -Xml $xml -Key "localpackages" -Value $OutputDir -Patterns $allLocalPackages
+
+    $xml.Save($nugetConfig)
+    Write-Host "Updated nuget.config with localpackages mapping (temporary, for pipeline execution only)."
+
+    return ,$packageVersions
+}
+
 function Resolve-WinAppSdkSplitDependencies {
     Write-Host "Version $WinAppSDKVersion detected. Resolving split dependencies..."
     $installDir = Join-Path $rootPath "localpackages\output"
-    New-Item -ItemType Directory -Path $installDir -Force | Out-Null
+    $null = New-Item -ItemType Directory -Path $installDir -Force
 
     # Create a temporary nuget.config to avoid interference from the repo's config
     $tempConfig = Join-Path $env:TEMP "nuget_$(Get-Random).config"
@@ -131,14 +417,24 @@ function Resolve-WinAppSdkSplitDependencies {
             if ($propsContent -match '<PackageVersion Include="Microsoft.Windows.SDK.BuildTools" Version="([^"]+)"') {
                 $buildToolsVersion = $Matches[1]
                 Write-Host "Downloading Microsoft.Windows.SDK.BuildTools version $buildToolsVersion..."
-                $nugetArgsBuildTools = "install Microsoft.Windows.SDK.BuildTools -Version $buildToolsVersion -ConfigFile $tempConfig -OutputDirectory $installDir -NonInteractive -NoCache"
-                Invoke-Expression "nuget $nugetArgsBuildTools" | Out-Null
+                & nuget install Microsoft.Windows.SDK.BuildTools `
+                    -Version $buildToolsVersion `
+                    -ConfigFile $tempConfig `
+                    -OutputDirectory $installDir `
+                    -NonInteractive `
+                    -NoCache `
+                    | Out-Null
             }
         }
 
         # Download package to inspect nuspec and keep it for the build
-        $nugetArgs = "install Microsoft.WindowsAppSDK -Version $WinAppSDKVersion -ConfigFile $tempConfig -OutputDirectory $installDir -NonInteractive -NoCache"
-        Invoke-Expression "nuget $nugetArgs" | Out-Null
+        & nuget install Microsoft.WindowsAppSDK `
+            -Version $WinAppSDKVersion `
+            -ConfigFile $tempConfig `
+            -OutputDirectory $installDir `
+            -NonInteractive `
+            -NoCache `
+            | Out-Null
 
         # Parse dependencies from the installed folders
         # Folder structure is typically {PackageId}.{Version}
@@ -172,52 +468,101 @@ function Resolve-WinAppSdkSplitDependencies {
     }
 }
 
-# Execute nuget list and capture the output
-if ($useExperimentalVersion) {
-    # The nuget list for experimental versions will cost more time
-    # So, we will not use -AllVersions to wast time
-    # But it can only get the latest experimental version
-    Write-Host "Fetching WindowsAppSDK with experimental versions"
-    $nugetOutput = nuget list Microsoft.WindowsAppSDK `
-        -Source  $sourceLink `
-        -Prerelease
-    # Filter versions based on the specified version prefix
-    $escapedVersionNumber = [regex]::Escape($winAppSdkVersionNumber)
-    $filteredVersions = $nugetOutput | Where-Object { $_ -match "Microsoft.WindowsAppSDK $escapedVersionNumber\." }
-    $latestVersions = $filteredVersions
-} else {
-    Write-Host "Fetching stable WindowsAppSDK versions for $winAppSdkVersionNumber"
-    $nugetOutput = nuget list Microsoft.WindowsAppSDK `
-        -Source $sourceLink `
-        -AllVersions
-    # Filter versions based on the specified version prefix
-    $escapedVersionNumber = [regex]::Escape($winAppSdkVersionNumber)
-    $filteredVersions = $nugetOutput | Where-Object { $_ -match "Microsoft.WindowsAppSDK $escapedVersionNumber\." }
-    $latestVersions = $filteredVersions | Sort-Object { [version]($_ -split ' ')[1] } -Descending | Select-Object -First 1
-}
+# Main logic: choose between artifact-based or feed-based approach
+if ($useArtifactSource) {
+    Write-Host "=== Using Artifact-Based Source ===" -ForegroundColor Cyan
+    Write-Host "Organization: $azureDevOpsOrg"
+    Write-Host "Project: $azureDevOpsProject"
+    Write-Host "Build ID: $buildId"
+    Write-Host "Artifact: $artifactName"
 
-Write-Host "Latest versions found: $latestVersions"
-# Extract the latest version number from the output
-$latestVersion = $latestVersions -split "`n" | `
-    Select-String -Pattern 'Microsoft.WindowsAppSDK\s*([0-9]+\.[0-9]+\.[0-9]+-*[a-zA-Z0-9]*)' | `
-    ForEach-Object { $_.Matches[0].Groups[1].Value } | `
-    Sort-Object -Descending | `
-    Select-Object -First 1
+    if ([string]::IsNullOrEmpty($buildId) -or $buildId -eq 'N/A') {
+        Write-Error "buildId parameter is required when using artifact source. Please provide a valid Windows App SDK Build ID."
+        Write-Host "Tip: You can find the build ID from the Windows App SDK pipeline run in Azure DevOps."
+        exit 1
+    }
 
-if ($latestVersion) {
-    $WinAppSDKVersion = $latestVersion
-    Write-Host "Extracted version: $WinAppSDKVersion"
+    # Download artifact
+    $artifactDir = Join-Path $rootPath "localpackages\artifact"
+    $downloadSuccess = Download-ArtifactFromPipeline `
+        -Organization $azureDevOpsOrg `
+        -Project $azureDevOpsProject `
+        -BuildId $buildId `
+        -ArtifactName $artifactName `
+        -OutputDir $artifactDir
+
+    if (-not $downloadSuccess) {
+        Write-Host "Failed to download artifact"
+        exit 1
+    }
+
+    # Resolve dependencies from artifact
+    $installDir = Join-Path $rootPath "localpackages\output"
+    $packageVersions = Resolve-ArtifactBasedDependencies `
+        -ArtifactDir $artifactDir `
+        -MetaPackageName $metaPackageName `
+        -SourceUrl $sourceLink `
+        -OutputDir $installDir
+
+    if ($packageVersions.Count -eq 0) {
+        Write-Error "Failed to resolve dependencies from artifact"
+        exit 1
+    }
+
+    $WinAppSDKVersion = $packageVersions[$metaPackageName]
+    Write-Host "WinAppSDK Version: $WinAppSDKVersion"
     Write-Host "##vso[task.setvariable variable=WinAppSDKVersion]$WinAppSDKVersion"
+
 } else {
-    Write-Host "Failed to extract version number from nuget list output"
-    exit 1
+    Write-Host "=== Using Feed-Based Source ===" -ForegroundColor Cyan
+
+    # Execute nuget list and capture the output
+    if ($useExperimentalVersion) {
+        # The nuget list for experimental versions will cost more time
+        # So, we will not use -AllVersions to wast time
+        # But it can only get the latest experimental version
+        Write-Host "Fetching WindowsAppSDK with experimental versions"
+        $nugetOutput = nuget list Microsoft.WindowsAppSDK `
+            -Source  $sourceLink `
+            -Prerelease
+        # Filter versions based on the specified version prefix
+        $escapedVersionNumber = [regex]::Escape($winAppSdkVersionNumber)
+        $filteredVersions = $nugetOutput | Where-Object { $_ -match "Microsoft.WindowsAppSDK $escapedVersionNumber\." }
+        $latestVersions = $filteredVersions
+    } else {
+        Write-Host "Fetching stable WindowsAppSDK versions for $winAppSdkVersionNumber"
+        $nugetOutput = nuget list Microsoft.WindowsAppSDK `
+            -Source $sourceLink `
+            -AllVersions
+        # Filter versions based on the specified version prefix
+        $escapedVersionNumber = [regex]::Escape($winAppSdkVersionNumber)
+        $filteredVersions = $nugetOutput | Where-Object { $_ -match "Microsoft.WindowsAppSDK $escapedVersionNumber\." }
+        $latestVersions = $filteredVersions | Sort-Object { [version]($_ -split ' ')[1] } -Descending | Select-Object -First 1
+    }
+
+    Write-Host "Latest versions found: $latestVersions"
+    # Extract the latest version number from the output
+    $latestVersion = $latestVersions -split "`n" | `
+        Select-String -Pattern 'Microsoft.WindowsAppSDK\s*([0-9]+\.[0-9]+\.[0-9]+-*[a-zA-Z0-9]*)' | `
+        ForEach-Object { $_.Matches[0].Groups[1].Value } | `
+        Sort-Object -Descending | `
+        Select-Object -First 1
+
+    if ($latestVersion) {
+        $WinAppSDKVersion = $latestVersion
+        Write-Host "Extracted version: $WinAppSDKVersion"
+        Write-Host "##vso[task.setvariable variable=WinAppSDKVersion]$WinAppSDKVersion"
+    } else {
+        Write-Host "Failed to extract version number from nuget list output"
+        exit 1
+    }
+
+    # Resolve dependencies for 1.8+
+    $packageVersions = @{ "Microsoft.WindowsAppSDK" = $WinAppSDKVersion }
+
+    Resolve-WinAppSdkSplitDependencies
 }
 
-# Resolve dependencies for 1.8+
-$packageVersions = @{ "Microsoft.WindowsAppSDK" = $WinAppSDKVersion }
-
-Resolve-WinAppSdkSplitDependencies
-
 # Update Directory.Packages.props file
 Get-ChildItem -Path $rootPath -Recurse "Directory.Packages.props" | ForEach-Object {
     $file = Read-FileWithEncoding -Path $_.FullName
@@ -226,9 +571,16 @@ Get-ChildItem -Path $rootPath -Recurse "Directory.Packages.props" | ForEach-Obje
     
     foreach ($pkgId in $packageVersions.Keys) {
         $ver = $packageVersions[$pkgId]
+
+        # Skip packages with empty versions to prevent corruption
+        if ([string]::IsNullOrWhiteSpace($ver)) {
+            Write-Warning "Skipping ${pkgId}: version is empty"
+            continue
+        }
+
         # Escape dots in package ID for regex
         $pkgIdRegex = $pkgId -replace '\.', '\.'
-        
+
         $newVersionString = "<PackageVersion Include=""$pkgId"" Version=""$ver"" />"
         $oldVersionString = "<PackageVersion Include=""$pkgIdRegex"" Version=""[-.0-9a-zA-Z]*"" />"
 
diff --git a/.pipelines/v2/ci-using-the-latest-winappsdk.yml b/.pipelines/v2/ci-using-the-latest-winappsdk.yml
index 16639f44c0..bb70ad277a 100644
--- a/.pipelines/v2/ci-using-the-latest-winappsdk.yml
+++ b/.pipelines/v2/ci-using-the-latest-winappsdk.yml
@@ -1,3 +1,8 @@
+# NOTE: When using artifact mode (useArtifactSource: true), the pipeline needs
+# permission to access System.AccessToken. This is automatically handled by the
+# script if SYSTEM_ACCESSTOKEN environment variable is available.
+# If you encounter authentication errors, ensure the job has oauth access enabled.
+
 trigger: none
 pr: none
 schedules:
@@ -37,6 +42,23 @@ parameters:
   - name: useExperimentalVersion
     type: boolean
     default: false
+  # Artifact mode parameters (optional)
+  - name: useArtifactSource
+    type: boolean
+    displayName: "Use Artifact Source (instead of feed)"
+    default: false
+  - name: buildId
+    type: string
+    displayName: "Windows App SDK Build ID (required only if using artifact source)"
+    default: 'N/A'
+  - name: azureDevOpsProject
+    type: string
+    displayName: "Source Project (for artifact mode, default: ProjectReunion)"
+    default: 'ProjectReunion'
+  - name: artifactName
+    type: string
+    displayName: "Artifact Name (for artifact mode, default: WindowsAppSDK_Nuget_And_MSIX)"
+    default: 'WindowsAppSDK_Nuget_And_MSIX'
 
 extends:
   template: templates/pipeline-ci-build.yml
@@ -49,3 +71,7 @@ extends:
     useLatestWinAppSDK: ${{ parameters.useLatestWinAppSDK }}
     winAppSDKVersionNumber: ${{ parameters.winAppSDKVersionNumber }}
     useExperimentalVersion: ${{ parameters.useExperimentalVersion }}
+    useArtifactSource: ${{ parameters.useArtifactSource }}
+    buildId: ${{ parameters.buildId }}
+    azureDevOpsProject: ${{ parameters.azureDevOpsProject }}
+    artifactName: ${{ parameters.artifactName }}
diff --git a/.pipelines/v2/templates/job-build-project.yml b/.pipelines/v2/templates/job-build-project.yml
index e41bfbc0ad..c5cd2ffd0c 100644
--- a/.pipelines/v2/templates/job-build-project.yml
+++ b/.pipelines/v2/templates/job-build-project.yml
@@ -74,6 +74,25 @@ parameters:
   - name: useExperimentalVersion
     type: boolean
     default: false
+  # Artifact mode parameters
+  - name: useArtifactSource
+    type: boolean
+    default: false
+  - name: azureDevOpsOrg
+    type: string
+    default: 'https://dev.azure.com/microsoft'
+  - name: azureDevOpsProject
+    type: string
+    default: 'ProjectReunion'
+  - name: buildId
+    type: string
+    default: ''
+  - name: artifactName
+    type: string
+    default: 'WindowsAppSDK_Nuget_And_MSIX'
+  - name: metaPackageName
+    type: string
+    default: 'Microsoft.WindowsAppSDK'
   - name: csProjectsToPublish
     type: object
     default:
@@ -226,6 +245,12 @@ jobs:
       parameters:
         versionNumber: ${{ parameters.winAppSDKVersionNumber }}
         useExperimentalVersion: ${{ parameters.useExperimentalVersion }}
+        useArtifactSource: ${{ parameters.useArtifactSource }}
+        azureDevOpsOrg: ${{ parameters.azureDevOpsOrg }}
+        azureDevOpsProject: ${{ parameters.azureDevOpsProject }}
+        buildId: ${{ parameters.buildId }}
+        artifactName: ${{ parameters.artifactName }}
+        metaPackageName: ${{ parameters.metaPackageName }}
   
   - ${{ if eq(parameters.useLatestWinAppSDK, false)}}:
     - template: .\steps-restore-nuget.yml
diff --git a/.pipelines/v2/templates/pipeline-ci-build.yml b/.pipelines/v2/templates/pipeline-ci-build.yml
index a56c575399..f4ac4e161f 100644
--- a/.pipelines/v2/templates/pipeline-ci-build.yml
+++ b/.pipelines/v2/templates/pipeline-ci-build.yml
@@ -34,6 +34,25 @@ parameters:
   - name: useExperimentalVersion
     type: boolean
     default: false
+  # Artifact mode parameters
+  - name: useArtifactSource
+    type: boolean
+    default: false
+  - name: azureDevOpsOrg
+    type: string
+    default: 'https://dev.azure.com/microsoft'
+  - name: azureDevOpsProject
+    type: string
+    default: 'ProjectReunion'
+  - name: buildId
+    type: string
+    default: ''
+  - name: artifactName
+    type: string
+    default: 'WindowsAppSDK_Nuget_And_MSIX'
+  - name: metaPackageName
+    type: string
+    default: 'Microsoft.WindowsAppSDK'
 
 stages:
   - ${{ each platform in parameters.buildPlatforms }}:
@@ -65,6 +84,12 @@ stages:
             ${{ if eq(parameters.useLatestWinAppSDK, true) }}:
               winAppSDKVersionNumber: ${{ parameters.winAppSDKVersionNumber }}
               useExperimentalVersion: ${{ parameters.useExperimentalVersion }}
+              useArtifactSource: ${{ parameters.useArtifactSource }}
+              azureDevOpsOrg: ${{ parameters.azureDevOpsOrg }}
+              azureDevOpsProject: ${{ parameters.azureDevOpsProject }}
+              buildId: ${{ parameters.buildId }}
+              artifactName: ${{ parameters.artifactName }}
+              metaPackageName: ${{ parameters.metaPackageName }}
             timeoutInMinutes: 90
 
   - stage: Build_SDK
diff --git a/.pipelines/v2/templates/steps-update-winappsdk-and-restore-nuget.yml b/.pipelines/v2/templates/steps-update-winappsdk-and-restore-nuget.yml
index 566c8045c4..458faf25be 100644
--- a/.pipelines/v2/templates/steps-update-winappsdk-and-restore-nuget.yml
+++ b/.pipelines/v2/templates/steps-update-winappsdk-and-restore-nuget.yml
@@ -5,6 +5,25 @@ parameters:
   - name: useExperimentalVersion
     type: boolean
     default: false
+  # Artifact mode parameters
+  - name: useArtifactSource
+    type: boolean
+    default: false
+  - name: azureDevOpsOrg
+    type: string
+    default: 'https://dev.azure.com/microsoft'
+  - name: azureDevOpsProject
+    type: string
+    default: 'ProjectReunion'
+  - name: buildId
+    type: string
+    default: ''
+  - name: artifactName
+    type: string
+    default: 'WindowsAppSDK_Nuget_And_MSIX'
+  - name: metaPackageName
+    type: string
+    default: 'Microsoft.WindowsAppSDK'
 
 steps:
 - task: NuGetAuthenticate@1
@@ -12,12 +31,20 @@ steps:
 
 - task: PowerShell@2
   displayName: Update WinAppSDK Versions
+  env:
+    SYSTEM_ACCESSTOKEN: $(System.AccessToken)
   inputs:
     filePath: '$(build.sourcesdirectory)\.pipelines\UpdateVersions.ps1'
     arguments: >
       -winAppSdkVersionNumber ${{ parameters.versionNumber }}
       -useExperimentalVersion $${{ parameters.useExperimentalVersion }}
       -rootPath "$(build.sourcesdirectory)"
+      -useArtifactSource $${{ parameters.useArtifactSource }}
+      -azureDevOpsOrg "${{ parameters.azureDevOpsOrg }}"
+      -azureDevOpsProject "${{ parameters.azureDevOpsProject }}"
+      -buildId "${{ parameters.buildId }}"
+      -artifactName "${{ parameters.artifactName }}"
+      -metaPackageName "${{ parameters.metaPackageName }}"
 
 # - task: NuGetCommand@2
 #   displayName: 'Restore NuGet packages (slnx)'
@@ -36,3 +63,4 @@ steps:
     feedsToUse: 'config'
     nugetConfigPath: '$(build.sourcesdirectory)\nuget.config'
     workingDirectory: '$(build.sourcesdirectory)'
+    arguments: '/p:NoWarn=NU1602,NU1604'