diff --git a/.vsts-ci.yml b/.vsts-ci.yml
index edde829ce7a1..7a69824b298c 100644
--- a/.vsts-ci.yml
+++ b/.vsts-ci.yml
@@ -30,10 +30,6 @@ parameters:
   displayName: Run A Test Build
   type: boolean
   default: false
-- name: enableArm64Job
-  displayName: Enables the ARM64 job
-  type: boolean
-  default: false
 
 variables:
 - template: /eng/pipelines/templates/variables/sdk-defaults.yml
@@ -78,7 +74,7 @@ extends:
       azureLinux30Amd64:
         image: mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-net11.0-build-amd64
       # Cross-compilation prereq image (clang + /crossrootfs/arm64 sysroot) used by the Linux arm64
-      # AoT leg. NativeAOT cross-links dotnet-aot for linux-arm64 from an x64 host; the container
+      # AOT leg. NativeAOT cross-links dotnet-aot for linux-arm64 from an x64 host; the container
       # provides the native toolchain + sysroot and sets ROOTFS_DIR, and the leg passes
       # /p:CrossBuild=true so ILC emits --sysroot/--target.
       azureLinuxCrossArm64:
@@ -152,7 +148,7 @@ extends:
               runTests: false
               variables:
                 _SignType: real
-              dependsOn: Official_windows_x64
+              dependsOn: Windows_x64_Official
               downloadManifestMsiPackages: true
             - categoryName: Official
               targetArchitecture: arm64
@@ -162,7 +158,7 @@ extends:
               runTests: false
               variables:
                 _SignType: real
-              dependsOn: Official_windows_x64
+              dependsOn: Windows_x64_Official
               downloadManifestMsiPackages: true
             ### TestTemplatesCG ###
             # Note: This job is only used to allow the test templates to be built locally on the agent as opposed to Helix.
@@ -178,7 +174,7 @@ extends:
       # arm64 linker and the RID-specific ILCompiler package handle the cross-link; no sysroot is
       # required). This leg therefore BUILDS on the existing win-x64 pool with /p:CrossBuild=true and
       # produces the dotnet-aot .dll plus its mstat/dgml size-analysis artifacts (that step is gated
-      # on the AoT category). It is build-only (runTests: false): there is no wired windows arm64 Helix
+      # on the AOT category). It is build-only (runTests: false): there is no wired windows arm64 Helix
       # queue yet, so running the *.AoT.Tests on arm64 hardware is a follow-up pending a
       # windows.11.arm64 queue. The VS 2026 build image is required for the arm64 linker used by this
       # cross-build. Runs for internal PRs and test builds.
@@ -196,7 +192,7 @@ extends:
             populateInternalRuntimeVariables: true
             runtimeSourceProperties: /p:DotNetRuntimeSourceFeed=https://ci.dot.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64)
             windowsJobParameterSets:
-            - categoryName: AoT
+            - categoryName: AOT
               targetArchitecture: arm64
               runtimeIdentifier: win-arm64
               osProperties: /p:CrossBuild=true
@@ -290,7 +286,7 @@ extends:
       # given a cross toolchain and target sysroot. This leg therefore runs on the regular x64 Linux
       # pool inside the azurelinux cross-arm64 prereq container (which provides clang + the
       # /crossrootfs/arm64 sysroot and sets ROOTFS_DIR) and passes /p:CrossBuild=true. Consistent
-      # with the other linux-arm64 legs, this only performs the build (the x64 AoT leg provides the
+      # with the other linux-arm64 legs, this only performs the build (the x64 AOT leg provides the
       # running test coverage). Runs for internal PRs and test builds; official builds publish via
       # the Official legs above and don't need it.
       - ${{ if or(eq(parameters.runTestBuild, true), eq(variables['Build.Reason'], 'PullRequest')) }}:
@@ -308,7 +304,7 @@ extends:
             runtimeSourceProperties: /p:DotNetRuntimeSourceFeed=https://ci.dot.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64)
             timeoutInMinutes: 90
             linuxJobParameterSets:
-            - categoryName: AoT
+            - categoryName: AOT
               container: azureLinuxCrossArm64
               targetArchitecture: arm64
               runtimeIdentifier: linux-arm64
@@ -346,9 +342,9 @@ extends:
       # dotnet-aot is built with NativeAOT, which can cross-compile osx-x64 -> osx-arm64 (clang/link
       # on macOS are multi-target and need no extra sysroot). This leg therefore BUILDS on the x64
       # macOS pool (the Official osx-arm64 leg already cross-builds on macOS-latest/x64) with
-      # /p:CrossBuild=true. Because AoT tests are dispatched to Helix (runTests passes
+      # /p:CrossBuild=true. Because AOT tests are dispatched to Helix (runTests passes
       # -test /p:CustomHelixTargetQueue=...), the *.AoT.Tests still execute on the osx.15.arm64
-      # Helix queue, so there is no macOS AoT test-coverage loss. Runs for internal PRs and test
+      # Helix queue, so there is no macOS AOT test-coverage loss. Runs for internal PRs and test
       # builds; official builds publish via the Official legs above and don't need it.
       - ${{ if or(eq(parameters.runTestBuild, true), eq(variables['Build.Reason'], 'PullRequest')) }}:
         - template: /eng/pipelines/templates/jobs/sdk-job-matrix.yml@self
@@ -364,26 +360,11 @@ extends:
             populateInternalRuntimeVariables: true
             runtimeSourceProperties: /p:DotNetRuntimeSourceFeed=https://ci.dot.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64)
             macOSJobParameterSets:
-            - categoryName: AoT
+            - categoryName: AOT
               runAoTTests: true
               targetArchitecture: arm64
               runtimeIdentifier: osx-arm64
               osProperties: /p:CrossBuild=true
-      ### ARM64 TESTBUILD ###
-      - ${{ if and(or(eq(parameters.runTestBuild, true), eq(variables['Build.Reason'], 'PullRequest')), eq(parameters.enableArm64Job, true)) }}:
-        - template: /eng/pipelines/templates/jobs/sdk-job-matrix.yml@self
-          parameters:
-            pool:
-              name: Azure Pipelines
-              vmImage: macOS-latest
-              os: macOS
-            helixTargetQueue: osx.15.arm64
-            populateInternalRuntimeVariables: true
-            runtimeSourceProperties: /p:DotNetRuntimeSourceFeed=https://ci.dot.net/internal /p:DotNetRuntimeSourceFeedKey=$(dotnetbuilds-internal-container-read-token-base64)
-            macOSJobParameterSets:
-            - categoryName: TestBuild
-              targetArchitecture: arm64
-              runtimeIdentifier: osx-arm64
 
       ############### DOTNET-FORMAT ###############
       - ${{ if or(eq(parameters.runTestBuild, true), eq(variables['Build.Reason'], 'PullRequest')) }}:
diff --git a/.vsts-pr.yml b/.vsts-pr.yml
index b1ff2508f752..db1ae21f8fed 100644
--- a/.vsts-pr.yml
+++ b/.vsts-pr.yml
@@ -40,7 +40,7 @@ resources:
   - container: azureLinux30Amd64
     image: mcr.microsoft.com/dotnet-buildtools/prereqs:azurelinux-3.0-net11.0-build-amd64
   # Cross-compilation prereq image (clang + /crossrootfs/arm64 sysroot) used by the Linux arm64
-  # AoT leg. NativeAOT cross-links dotnet-aot for linux-arm64 from an x64 host; the container
+  # AOT leg. NativeAOT cross-links dotnet-aot for linux-arm64 from an x64 host; the container
   # provides the native toolchain + sysroot and sets ROOTFS_DIR, and the leg passes
   # /p:CrossBuild=true so ILC emits --sysroot/--target.
   - container: azureLinuxCrossArm64
@@ -65,11 +65,11 @@ stages:
         os: windows
       helixTargetQueue: windows.amd64.vs2026.pre.scout.open
 
-  ### AoT (win-arm64 cross-build) ###
+  ### AOT (win-arm64 cross-build) ###
   # dotnet-aot is built with NativeAOT, which can cross-compile win-x64 -> win-arm64 (the MSVC arm64
   # linker and the RID-specific ILCompiler package handle the cross-link; no sysroot is required).
   # This leg BUILDS on the win-x64 pool with /p:CrossBuild=true and produces the dotnet-aot .dll plus
-  # its mstat/dgml size-analysis artifacts (that step is gated on the AoT category). It is build-only
+  # its mstat/dgml size-analysis artifacts (that step is gated on the AOT category). It is build-only
   # (runTests: false): there is no wired windows arm64 Helix queue yet, so running the *.AoT.Tests on
   # arm64 hardware is a follow-up pending a windows.11.arm64 queue.
   # The VS 2026 build image is required for the arm64 linker used by this cross-build.
@@ -81,7 +81,7 @@ stages:
         os: windows
       helixTargetQueue: windows.amd64.vs2026.pre.scout.open
       windowsJobParameterSets:
-      - categoryName: AoT
+      - categoryName: AOT
         targetArchitecture: arm64
         runtimeIdentifier: win-arm64
         osProperties: /p:CrossBuild=true
@@ -96,12 +96,12 @@ stages:
         os: linux
       helixTargetQueue: ubuntu.2204.amd64.open
 
-  ### AoT (linux-arm64 cross-build) ###
+  ### AOT (linux-arm64 cross-build) ###
   # dotnet-aot is built with NativeAOT, which can cross-compile for linux-arm64 from an x64 host
   # given a cross toolchain and target sysroot. This leg therefore runs on the regular x64 Linux
   # pool inside the azurelinux cross-arm64 prereq container (which provides clang + the
   # /crossrootfs/arm64 sysroot and sets ROOTFS_DIR) and passes /p:CrossBuild=true. Consistent with
-  # the other linux-arm64 legs, this only performs the build (the x64 AoT leg provides the running
+  # the other linux-arm64 legs, this only performs the build (the x64 AOT leg provides the running
   # test coverage).
   - template: /eng/pipelines/templates/jobs/sdk-job-matrix.yml
     parameters:
@@ -112,7 +112,7 @@ stages:
       helixTargetQueue: ubuntu.2204.amd64.open
       timeoutInMinutes: 90
       linuxJobParameterSets:
-      - categoryName: AoT
+      - categoryName: AOT
         container: azureLinuxCrossArm64
         targetArchitecture: arm64
         runtimeIdentifier: linux-arm64
@@ -127,11 +127,11 @@ stages:
         vmImage: macOS-latest
         os: macOS
       helixTargetQueue: osx.15.arm64.open
-  ### AoT (osx-arm64 cross-build) ###
+  ### AOT (osx-arm64 cross-build) ###
   # dotnet-aot is built with NativeAOT, which can cross-compile osx-x64 -> osx-arm64 (clang/link on
   # macOS are multi-target and need no extra sysroot). This leg BUILDS on the x64 macOS pool with
-  # /p:CrossBuild=true; because AoT tests are dispatched to Helix, the *.AoT.Tests still run on the
-  # osx.15.arm64 Helix queue, so there is no macOS AoT test-coverage loss.
+  # /p:CrossBuild=true; because AOT tests are dispatched to Helix, the *.AoT.Tests still run on the
+  # osx.15.arm64 Helix queue, so there is no macOS AOT test-coverage loss.
   - template: /eng/pipelines/templates/jobs/sdk-job-matrix.yml
     parameters:
       pool:
@@ -140,7 +140,7 @@ stages:
         os: macOS
       helixTargetQueue: osx.15.arm64.open
       macOSJobParameterSets:
-      - categoryName: AoT
+      - categoryName: AOT
         runAoTTests: true
         targetArchitecture: arm64
         runtimeIdentifier: osx-arm64
@@ -155,8 +155,7 @@ stages:
           os: macOS
         helixTargetQueue: osx.15.amd64.open
         macOSJobParameterSets:
-        - categoryName: TestBuild
-          runtimeIdentifier: osx-x64
+        - runtimeIdentifier: osx-x64
 
   ############### DOTNET-FORMAT ###############
   - template: /eng/dotnet-format/dotnet-format-integration.yml
diff --git a/eng/pipelines/templates/jobs/sdk-build.yml b/eng/pipelines/templates/jobs/sdk-build.yml
index e9a402db87c4..20109fbaab9f 100644
--- a/eng/pipelines/templates/jobs/sdk-build.yml
+++ b/eng/pipelines/templates/jobs/sdk-build.yml
@@ -7,7 +7,8 @@ parameters:
     publishTaskPrefix: ''
   container: ''
   helixTargetContainer: ''
-  categoryName: Build
+  categoryName: ''
+  platformName: ''
   runTests: true
   testProjects: $(Build.SourcesDirectory)/test/UnitTests.proj
   publishRetryConfig: false
@@ -25,7 +26,7 @@ parameters:
   # These publish the test assembly as a NativeAOT binary and run it on the same architecture,
   # validating the AOT CLI entry-point code under NativeAOT compilation. Only enabled where the
   # agent architecture matches the target (the produced native binary must run on the agent);
-  # cross-arch AoT legs leave it false.
+  # cross-arch AOT legs leave it false.
   runNativeAotCliTests: false
   ### MSBUILD ###
   targetArchitecture: x64
@@ -44,12 +45,12 @@ parameters:
 jobs:
 - template: /eng/common/${{ parameters.oneESCompat.templateFolderName }}/job/job.yml
   parameters:
-    ${{ if eq(parameters.container, '') }}:
-      name: ${{ parameters.categoryName }}_${{ parameters.pool.os }}_${{ parameters.targetArchitecture }}
-      displayName: '${{ parameters.categoryName }}: ${{ parameters.pool.os }} (${{ parameters.targetArchitecture }})'
+    ${{ if eq(parameters.categoryName, '') }}:
+      name: ${{ parameters.platformName }}_${{ parameters.targetArchitecture }}
+      displayName: '${{ parameters.platformName }} ${{ parameters.targetArchitecture }}'
     ${{ else }}:
-      name: ${{ parameters.categoryName }}_${{ parameters.pool.os }}_${{ parameters.targetArchitecture }}_${{ parameters.container }}
-      displayName: '${{ parameters.categoryName }}: ${{ parameters.pool.os }} (${{ parameters.targetArchitecture }}) [${{ parameters.container }}]'
+      name: ${{ parameters.platformName }}_${{ parameters.targetArchitecture }}_${{ parameters.categoryName }}
+      displayName: '${{ parameters.platformName }} ${{ parameters.targetArchitecture }} ${{ parameters.categoryName }}'
     pool: ${{ parameters.pool }}
     container: ${{ parameters.container }}
     strategy: ${{ parameters.strategy }}
@@ -290,11 +291,10 @@ jobs:
       continueOnError: true
       condition: always()
 
-    # Only the AoT legs build the dotnet-aot NativeAOT library, so only they produce the
-    # size-analysis files. Gate on the AoT category so these steps run on every AoT leg (including
-    # the build-only cross-arch legs) and never upload empty artifacts on non-AoT legs like the
-    # TestBuild/FullFramework jobs.
-    - ${{ if eq(parameters.categoryName, 'AoT') }}:
+    # Only the AOT legs build the dotnet-aot NativeAOT library, so only they produce the
+    # size-analysis files. Gate on the AOT category so these steps run on every AOT leg (including
+    # the build-only cross-arch legs) and never upload empty artifacts on non-AOT legs.
+    - ${{ if eq(parameters.categoryName, 'AOT') }}:
       - task: CopyFiles@2
         displayName: 🟣 Copy NativeAOT Size Analysis Files
         inputs:
diff --git a/eng/pipelines/templates/jobs/sdk-job-matrix.yml b/eng/pipelines/templates/jobs/sdk-job-matrix.yml
index acded86843c5..80083b7ad955 100644
--- a/eng/pipelines/templates/jobs/sdk-job-matrix.yml
+++ b/eng/pipelines/templates/jobs/sdk-job-matrix.yml
@@ -4,29 +4,26 @@ parameters:
   locBranch: ''
   ### WINDOWS ###
   windowsJobParameterSets:
-  - categoryName: TestBuild
-    publishRetryConfig: true
+  - publishRetryConfig: true
     runNativeAotCliTests: true
+  - categoryName: AOT
+    runAoTTests: true
   - categoryName: FullFramework
     testFullMSBuild: true
-  - categoryName: AoT
-    runAoTTests: true
   ### LINUX ###
   linuxJobParameterSets:
-  - categoryName: TestBuild
-    osProperties: $(linuxOsglibcProperties)
+  - osProperties: $(linuxOsglibcProperties)
     runNativeAotCliTests: true
-  - categoryName: TestBuild
-    targetArchitecture: arm64
+  - targetArchitecture: arm64
     runtimeIdentifier: linux-arm64
     osProperties: $(linuxOsglibcProperties)
     # Don't run the tests on arm64. Only perform the build itself.
     runTests: false
-  # The x64 AoT leg runs on native x64 hardware (HostRid == TargetRid == linux-x64) so it can both
+  # The x64 AOT leg runs on native x64 hardware (HostRid == TargetRid == linux-x64) so it can both
   # build dotnet-aot via NativeAOT (producing the .so and its mstat/dgml size-analysis output) and
-  # run the *.AoT.Tests.csproj test projects. linux-arm64 AoT is covered by a separate cross-build
+  # run the *.AoT.Tests.csproj test projects. linux-arm64 AOT is covered by a separate cross-build
   # leg (see .vsts-pr.yml / .vsts-ci.yml).
-  - categoryName: AoT
+  - categoryName: AOT
     runAoTTests: true
     osProperties: $(linuxOsglibcProperties)
   - categoryName: ContainerBased
@@ -37,8 +34,7 @@ parameters:
     disableJob: true
   ### MACOS ###
   macOSJobParameterSets:
-  - categoryName: TestBuild
-    targetArchitecture: arm64
+  - targetArchitecture: arm64
     runtimeIdentifier: osx-arm64
     runNativeAotCliTests: true
 
@@ -62,6 +58,7 @@ jobs:
         parameters:
           ${{ insert }}: ${{ parameters }}
           ${{ insert }}: ${{ jobParameters }}
+          platformName: Windows
 - ${{ if eq(parameters.pool.os, 'linux') }}:
   - ${{ each jobParameters in parameters.linuxJobParameterSets }}:
     - ${{ if not(jobParameters.disableJob) }}:
@@ -69,6 +66,7 @@ jobs:
         parameters:
           ${{ insert }}: ${{ parameters }}
           ${{ insert }}: ${{ jobParameters }}
+          platformName: Linux
 - ${{ if eq(parameters.pool.os, 'macOS') }}:
   - ${{ each jobParameters in parameters.macOSJobParameterSets }}:
     - ${{ if not(jobParameters.disableJob) }}:
@@ -76,3 +74,4 @@ jobs:
         parameters:
           ${{ insert }}: ${{ parameters }}
           ${{ insert }}: ${{ jobParameters }}
+          platformName: Mac