diff --git a/eng/docker-tools/templates/stages/dotnet/build-and-test.yml b/eng/docker-tools/templates/stages/dotnet/build-and-test.yml
index 81eee2c9e7..46302747d1 100644
--- a/eng/docker-tools/templates/stages/dotnet/build-and-test.yml
+++ b/eng/docker-tools/templates/stages/dotnet/build-and-test.yml
@@ -3,6 +3,8 @@
 
 parameters:
   linuxAmd64Pool: ""
+  # Optional pool priority: High, Medium, or Low. Empty leaves pool defaults unchanged.
+  poolPriority: ""
 
   # Custom init steps for all jobs
   customInitSteps: []
@@ -77,15 +79,31 @@ stages:
     # Linux AMD64
     linuxAmd64Pool:
       ${{ if ne(parameters.linuxAmd64Pool, '') }}:
-        ${{ parameters.linuxAmd64Pool }}
+        ${{ if ne(parameters.poolPriority, '') }}:
+          ${{ each property in parameters.linuxAmd64Pool }}:
+            ${{ if ne(property.key, 'demands') }}:
+              ${{ property.key }}: ${{ property.value }}
+          demands:
+          - ${{ if parameters.linuxAmd64Pool.demands }}:
+            - ${{ parameters.linuxAmd64Pool.demands }}
+          - Priority -equals ${{ parameters.poolPriority }}
+        ${{ else }}:
+          ${{ parameters.linuxAmd64Pool }}
       ${{ elseif eq(variables['System.TeamProject'], parameters.publicProjectName) }}:
         name: $(linuxAmd64PublicPoolName)
-        demands: ImageOverride -equals $(linuxAmd64PublicPoolImage)
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands:
+          - ImageOverride -equals $(linuxAmd64PublicPoolImage)
+          - Priority -equals ${{ parameters.poolPriority }}
+        ${{ else }}:
+          demands: ImageOverride -equals $(linuxAmd64PublicPoolImage)
         os: linux
       ${{ elseif eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         name: $(linuxAmd64InternalPoolName)
         image: $(linuxAmd64InternalPoolImage)
         os: linux
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands: Priority -equals ${{ parameters.poolPriority }}
 
     # Linux Arm64
     linuxArm64Pool:
@@ -93,10 +111,17 @@ stages:
       hostArchitecture: Arm64
       ${{ if eq(variables['System.TeamProject'], parameters.publicProjectName) }}:
         name: $(linuxArm64PublicPoolName)
-        demands: ImageOverride -equals $(linuxArm64PublicPoolImage)
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands:
+          - ImageOverride -equals $(linuxArm64PublicPoolImage)
+          - Priority -equals ${{ parameters.poolPriority }}
+        ${{ else }}:
+          demands: ImageOverride -equals $(linuxArm64PublicPoolImage)
       ${{ if eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         name: $(linuxArm64InternalPoolName)
         image: $(linuxArm64InternalPoolImage)
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands: Priority -equals ${{ parameters.poolPriority }}
 
     # Linux Arm32
     linuxArm32Pool:
@@ -104,10 +129,17 @@ stages:
       hostArchitecture: Arm64
       ${{ if eq(variables['System.TeamProject'], parameters.publicProjectName) }}:
         name: $(linuxArm32PublicPoolName)
-        demands: ImageOverride -equals $(linuxArm32PublicPoolImage)
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands:
+          - ImageOverride -equals $(linuxArm32PublicPoolImage)
+          - Priority -equals ${{ parameters.poolPriority }}
+        ${{ else }}:
+          demands: ImageOverride -equals $(linuxArm32PublicPoolImage)
       ${{ if eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         name: $(linuxArm32InternalPoolName)
         image: $(linuxArm32InternalPoolImage)
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands: Priority -equals ${{ parameters.poolPriority }}
 
     # Windows Server 2016
     windows2016Pool:
@@ -117,6 +149,8 @@ stages:
         image: $(windowsServer2016PublicPoolImage)
       ${{ if eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         image: $(windowsServer2016InternalPoolImage)
+      ${{ if ne(parameters.poolPriority, '') }}:
+        demands: Priority -equals ${{ parameters.poolPriority }}
 
     # Windows Server 2019 (1809)
     windows1809Pool:
@@ -126,6 +160,8 @@ stages:
         image: $(windowsServer2019PublicPoolImage)
       ${{ if eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         image: $(windowsServer2019InternalPoolImage)
+      ${{ if ne(parameters.poolPriority, '') }}:
+        demands: Priority -equals ${{ parameters.poolPriority }}
 
     # Windows Server 2022
     windows2022Pool:
@@ -135,6 +171,8 @@ stages:
         image: $(windowsServer2022PublicPoolImage)
       ${{ if eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         image: $(windowsServer2022InternalPoolImage)
+      ${{ if ne(parameters.poolPriority, '') }}:
+        demands: Priority -equals ${{ parameters.poolPriority }}
 
     # Windows Server 2025
     windows2025Pool:
@@ -144,3 +182,5 @@ stages:
         image: $(windowsServer2025PublicPoolImage)
       ${{ if eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         image: $(windowsServer2025InternalPoolImage)
+      ${{ if ne(parameters.poolPriority, '') }}:
+        demands: Priority -equals ${{ parameters.poolPriority }}
diff --git a/eng/docker-tools/templates/stages/dotnet/build-test-publish-repo.yml b/eng/docker-tools/templates/stages/dotnet/build-test-publish-repo.yml
index 9102d994cb..df8f6dbd0a 100644
--- a/eng/docker-tools/templates/stages/dotnet/build-test-publish-repo.yml
+++ b/eng/docker-tools/templates/stages/dotnet/build-test-publish-repo.yml
@@ -2,6 +2,8 @@
 
 parameters:
   linuxAmd64Pool: ""
+  # Optional pool priority: High, Medium, or Low. Empty leaves pool defaults unchanged.
+  poolPriority: ""
 
   # Custom init steps for all jobs
   customInitSteps: []
@@ -48,6 +50,7 @@ stages:
 - template: /eng/docker-tools/templates/stages/dotnet/build-and-test.yml@self
   parameters:
     linuxAmd64Pool: ${{ parameters.linuxAmd64Pool }}
+    poolPriority: ${{ parameters.poolPriority }}
     # Pre-build
     customGenerateMatrixInitSteps: ${{ parameters.customGenerateMatrixInitSteps }}
     customCopyBaseImagesInitSteps: ${{ parameters.customCopyBaseImagesInitSteps }}
@@ -79,6 +82,7 @@ stages:
 - template: /eng/docker-tools/templates/stages/dotnet/publish.yml@self
   parameters:
     pool: ${{ parameters.linuxAmd64Pool }}
+    poolPriority: ${{ parameters.poolPriority }}
     customPublishInitSteps: ${{ parameters.customPublishInitSteps }}
     customInitSteps: ${{ parameters.customInitSteps }}
     internalProjectName: ${{ parameters.internalProjectName }}
diff --git a/eng/docker-tools/templates/stages/dotnet/publish.yml b/eng/docker-tools/templates/stages/dotnet/publish.yml
index 5cac237b95..f7eaba798f 100644
--- a/eng/docker-tools/templates/stages/dotnet/publish.yml
+++ b/eng/docker-tools/templates/stages/dotnet/publish.yml
@@ -6,6 +6,8 @@ parameters:
   publicProjectName: null
   publishConfig: null
   pool: ""
+  # Optional pool priority: High, Medium, or Low. Empty leaves pool defaults unchanged.
+  poolPriority: ""
   isStandalonePublish: false
   customPublishInitSteps: []
   customInitSteps: []
@@ -53,12 +55,28 @@ stages:
 
     pool:
       ${{ if ne(parameters.pool, '') }}:
-        ${{ parameters.pool }}
+        ${{ if ne(parameters.poolPriority, '') }}:
+          ${{ each property in parameters.pool }}:
+            ${{ if ne(property.key, 'demands') }}:
+              ${{ property.key }}: ${{ property.value }}
+          demands:
+          - ${{ if parameters.pool.demands }}:
+            - ${{ parameters.pool.demands }}
+          - Priority -equals ${{ parameters.poolPriority }}
+        ${{ else }}:
+          ${{ parameters.pool }}
       ${{ elseif eq(variables['System.TeamProject'], parameters.publicProjectName) }}:
         name: $(linuxAmd64PublicPoolName)
-        demands: ImageOverride -equals $(linuxAmd64PublicPoolImage)
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands:
+          - ImageOverride -equals $(linuxAmd64PublicPoolImage)
+          - Priority -equals ${{ parameters.poolPriority }}
+        ${{ else }}:
+          demands: ImageOverride -equals $(linuxAmd64PublicPoolImage)
         os: linux
       ${{ elseif eq(variables['System.TeamProject'], parameters.internalProjectName) }}:
         name: $(linuxAmd64InternalPoolName)
         image: $(linuxAmd64InternalPoolImage)
         os: linux
+        ${{ if ne(parameters.poolPriority, '') }}:
+          demands: Priority -equals ${{ parameters.poolPriority }}
diff --git a/eng/docker-tools/templates/variables/docker-images.yml b/eng/docker-tools/templates/variables/docker-images.yml
index 334fb561fc..2a64cc79a3 100644
--- a/eng/docker-tools/templates/variables/docker-images.yml
+++ b/eng/docker-tools/templates/variables/docker-images.yml
@@ -1,5 +1,5 @@
 variables:
-  imageNames.imageBuilderName: mcr.microsoft.com/dotnet-buildtools/image-builder@sha256:8d452a2daee53be18da5bc5c17776672444b65ae334552937a10596f626da31d
+  imageNames.imageBuilderName: mcr.microsoft.com/dotnet-buildtools/image-builder@sha256:b9102ccb33a9819e6cef1a618803b1e61a82b6715c8540e3fc757f10137a8c57
   imageNames.imageBuilder: $(imageNames.imageBuilderName)
   imageNames.imageBuilder.withrepo: imagebuilder-withrepo:$(Build.BuildId)-$(System.JobId)
   imageNames.testRunner: mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux3.0-docker-testrunner