diff --git a/.azure-pipelines/azure-pipelines-Official.yml b/.azure-pipelines/azure-pipelines-Official.yml
index a5a08167ca1..56d88751f69 100644
--- a/.azure-pipelines/azure-pipelines-Official.yml
+++ b/.azure-pipelines/azure-pipelines-Official.yml
@@ -14,7 +14,7 @@ schedules:
     - 202012
   always: true
 
-pool: sonicbld
+pool: sonicbld-1es
 
 stages:
 - stage: Build
diff --git a/.azure-pipelines/azure-pipelines-UpgrateVersion.yml b/.azure-pipelines/azure-pipelines-UpgrateVersion.yml
index cb1b0744ccb..b40a5d03330 100644
--- a/.azure-pipelines/azure-pipelines-UpgrateVersion.yml
+++ b/.azure-pipelines/azure-pipelines-UpgrateVersion.yml
@@ -26,7 +26,7 @@ resources:
     ref: master
     endpoint: sonic-net
 
-pool: sonicbld
+pool: sonicbld-1es
 
 parameters:
 - name: 'jobFilters'
diff --git a/.azure-pipelines/build-template.yml b/.azure-pipelines/build-template.yml
index 355cfc7aaf9..813126792e6 100644
--- a/.azure-pipelines/build-template.yml
+++ b/.azure-pipelines/build-template.yml
@@ -35,9 +35,9 @@ parameters:
 - name: pool
   type: string
   values:
-  - sonicbld
+  - sonicbld-1es
   - sonicbld_8c
-  default: sonicbld
+  default: sonicbld-1es
 
 - name: dbg_image
   type: boolean
diff --git a/.azure-pipelines/docker-sonic-mgmt-py3-only.yml b/.azure-pipelines/docker-sonic-mgmt-py3-only.yml
index f31e069bbc2..8019e957fdc 100644
--- a/.azure-pipelines/docker-sonic-mgmt-py3-only.yml
+++ b/.azure-pipelines/docker-sonic-mgmt-py3-only.yml
@@ -32,7 +32,7 @@ stages:
 - stage: Build
   jobs:
   - job: Build
-    pool: sonicbld
+    pool: sonicbld-1es
     timeoutInMinutes: 360
     steps:
     - template: cleanup.yml
diff --git a/.azure-pipelines/docker-sonic-mgmt.yml b/.azure-pipelines/docker-sonic-mgmt.yml
index 207d8ee710f..924e4230df5 100644
--- a/.azure-pipelines/docker-sonic-mgmt.yml
+++ b/.azure-pipelines/docker-sonic-mgmt.yml
@@ -32,7 +32,7 @@ stages:
 - stage: Build
   jobs:
   - job: Build
-    pool: sonicbld
+    pool: sonicbld-1es
     timeoutInMinutes: 360
     steps:
     - template: cleanup.yml
diff --git a/.azure-pipelines/docker-sonic-slave-template.yml b/.azure-pipelines/docker-sonic-slave-template.yml
index 1ac8ce67fd3..8bf7540e180 100644
--- a/.azure-pipelines/docker-sonic-slave-template.yml
+++ b/.azure-pipelines/docker-sonic-slave-template.yml
@@ -29,9 +29,9 @@ parameters:
   default: sonicdev
 - name: pool
   type: string
-  default: sonicbld
+  default: sonicbld-1es
   values:
-  - sonicbld
+  - sonicbld-1es
   - sonicbld-arm64
   - sonicbld-armhf
 
diff --git a/.azure-pipelines/docker-sonic-slave.yml b/.azure-pipelines/docker-sonic-slave.yml
index acff1b85879..9633c32f607 100644
--- a/.azure-pipelines/docker-sonic-slave.yml
+++ b/.azure-pipelines/docker-sonic-slave.yml
@@ -64,7 +64,7 @@ stages:
       - ${{ each arch in parameters.arches }}:
         - template: .azure-pipelines/docker-sonic-slave-template.yml@buildimage
           parameters:
-            pool: sonicbld
+            pool: sonicbld-1es
             arch: ${{ arch }}
             dist: ${{ dist }}
             ${{ if ne(arch, 'amd64') }}:
diff --git a/.azure-pipelines/dpkg-cache-cleanup.yml b/.azure-pipelines/dpkg-cache-cleanup.yml
index 50bb3a63635..7bac6997e40 100644
--- a/.azure-pipelines/dpkg-cache-cleanup.yml
+++ b/.azure-pipelines/dpkg-cache-cleanup.yml
@@ -16,7 +16,7 @@ pr: none
 
 jobs:
 - job: Amd
-  pool: sonicbld
+  pool: sonicbld-1es
   timeoutInMinutes: 5
   steps:
   - checkout: none
diff --git a/.azure-pipelines/official-build-cache.yml b/.azure-pipelines/official-build-cache.yml
index cc398bab711..0f7b34e9bd5 100644
--- a/.azure-pipelines/official-build-cache.yml
+++ b/.azure-pipelines/official-build-cache.yml
@@ -24,7 +24,7 @@ pr: none
 
 stages:
 - stage: Build
-  pool: sonicbld
+  pool: sonicbld-1es
   variables:
   - name: CACHE_MODE
     value: cache
diff --git a/.azure-pipelines/official-build.yml b/.azure-pipelines/official-build.yml
index 14308292f4b..ecc9bd89c69 100644
--- a/.azure-pipelines/official-build.yml
+++ b/.azure-pipelines/official-build.yml
@@ -34,7 +34,7 @@ variables:
 
 stages:
 - stage: Build
-  pool: sonicbld
+  pool: sonicbld-1es
   variables:
   - name: CACHE_MODE
     value: wcache
diff --git a/.azure-pipelines/template-commonlib.yml b/.azure-pipelines/template-commonlib.yml
index cd7551d8382..c821998ae81 100644
--- a/.azure-pipelines/template-commonlib.yml
+++ b/.azure-pipelines/template-commonlib.yml
@@ -11,7 +11,7 @@ jobs:
   - job: Build_${{ arch }}
     timeoutInMinutes: 120
     ${{ if eq(arch,'amd64') }}:
-      pool: sonicbld
+      pool: sonicbld-1es
     ${{ else }}:
       pool: sonicbld-${{ arch }}
     variables:
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
index 18ed0c58b65..4144bf801f8 100644
--- a/azure-pipelines.yml
+++ b/azure-pipelines.yml
@@ -51,7 +51,7 @@ variables:
 
 stages:
 - stage: BuildVS
-  pool: sonicbld
+  pool: sonicbld-1es
   jobs:
   - template: .azure-pipelines/azure-pipelines-build.yml
     parameters:
@@ -60,7 +60,7 @@ stages:
       - name: vs
 
 - stage: Build
-  pool: sonicbld
+  pool: sonicbld-1es
   dependsOn: []
   jobs:
   - template: .azure-pipelines/azure-pipelines-build.yml
@@ -163,7 +163,7 @@ stages:
         testRunTitle: vstest
 
   - job: t0_elastictest
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     displayName: "kvmtest-t0 by Elastictest"
     timeoutInMinutes: 240
     continueOnError: false
@@ -176,7 +176,7 @@ stages:
         MGMT_BRANCH: $(BUILD_BRANCH)
 
   - job: t0_2vlans_elastictest
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     displayName: "kvmtest-t0-2vlans by Elastictest"
     timeoutInMinutes: 240
     continueOnError: false
@@ -191,7 +191,7 @@ stages:
         DEPLOY_MG_EXTRA_PARAMS: "-e vlan_config=two_vlan_a"
 
   - job: t1_lag_elastictest
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     displayName: "kvmtest-t1-lag by Elastictest"
     timeoutInMinutes: 240
     continueOnError: false
@@ -205,7 +205,7 @@ stages:
 
   - job: multi_asic_elastictest
     displayName: "kvmtest-multi-asic-t1-lag by Elastictest"
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     timeoutInMinutes: 240
     continueOnError: false
     steps:
@@ -219,7 +219,7 @@ stages:
           MGMT_BRANCH: $(BUILD_BRANCH)
 
   - job: dualtor_elastictest
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     displayName: "kvmtest-dualtor-t0 by Elastictest"
     timeoutInMinutes: 240
     continueOnError: false
@@ -234,7 +234,7 @@ stages:
 
   - job: sonic_t0_elastictest
     displayName: "kvmtest-t0-sonic by Elastictest"
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     timeoutInMinutes: 240
     continueOnError: false
     steps:
@@ -252,7 +252,7 @@ stages:
     displayName: "kvmtest-dpu by Elastictest"
     timeoutInMinutes: 240
     continueOnError: false
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     steps:
       - template: .azure-pipelines/run-test-elastictest-template.yml@sonic-mgmt
         parameters:
@@ -265,7 +265,7 @@ stages:
     displayName: "onboarding testcases by Elastictest"
     timeoutInMinutes: 240
     continueOnError: true
-    pool: ubuntu-20.04
+    pool: sonic-ubuntu-1c
     steps:
       - template: .azure-pipelines/run-test-elastictest-template.yml@sonic-mgmt
         parameters:
@@ -279,7 +279,7 @@ stages:
 
 #  - job: wan_elastictest
 #    displayName: "kvmtest-wan by Elastictest"
-#    pool: ubuntu-20.04
+#    pool: sonic-ubuntu-1c
 #    timeoutInMinutes: 240
 #    continueOnError: false
 #    steps: