diff --git a/taskcluster/ci/test/mochitest.yml b/taskcluster/ci/test/mochitest.yml
index 99b56fca534a..1e26631a8331 100644
--- a/taskcluster/ci/test/mochitest.yml
+++ b/taskcluster/ci/test/mochitest.yml
@@ -104,6 +104,7 @@ mochitest-browser-chrome:
         by-test-platform:
             linux64-.*cov/opt: 7200
             windows10-64-ccov/debug: 7200
+            windows10-aarch64/*: 7200
             macosx64-ccov/debug: 10800
             linux.*/debug: 5400
             default: 3600
diff --git a/taskcluster/ci/test/talos.yml b/taskcluster/ci/test/talos.yml
index 0cf3262f8ea3..deb6c3dee369 100644
--- a/taskcluster/ci/test/talos.yml
+++ b/taskcluster/ci/test/talos.yml
@@ -291,10 +291,12 @@ talos-xperf:
     run-as-administrator:
         by-test-platform:
             windows7-32.*: false
+            windows10-aarch64.*: false
             windows10-64.*: true
     run-on-projects:
         by-test-platform:
             windows7-32(-pgo)?/.*: ['mozilla-beta', 'trunk', 'try']
+            windows10-aarch64/opt: []
             windows10-64.*/opt: ['mozilla-beta', 'trunk', 'try']
             default: []
     tier:
diff --git a/taskcluster/ci/test/test-platforms.yml b/taskcluster/ci/test/test-platforms.yml
index 993d13701864..ef65f552a5ec 100644
--- a/taskcluster/ci/test/test-platforms.yml
+++ b/taskcluster/ci/test/test-platforms.yml
@@ -205,6 +205,18 @@ windows10-64/opt:
         - mochitest-headless
         - raptor-firefox
 
+# windows10-aarch64/opt:
+#     build-platform: win64-aarch64/opt
+#     test-sets:
+#         - awsy
+#         - desktop-screenshot-capture
+#         - windows-talos
+#         - marionette-gpu-tests
+#         - windows-tests
+#         - web-platform-tests
+#         - mochitest-headless
+#         - raptor-firefox
+
 windows10-64-ux/opt:
     build-platform: win64-nightly/opt
     test-sets:
diff --git a/taskcluster/ci/test/web-platform.yml b/taskcluster/ci/test/web-platform.yml
index f2e20e3fd6f6..263abc4adbaa 100644
--- a/taskcluster/ci/test/web-platform.yml
+++ b/taskcluster/ci/test/web-platform.yml
@@ -35,6 +35,7 @@ web-platform-tests:
             macosx64.*/opt: 8
             macosx64/debug: 16
             windows10.*/debug: 18
+            windows10-aarch64/opt: 12
             macosx64-ccov/debug: 24
             default: 12
     max-run-time:
@@ -49,6 +50,7 @@ web-platform-tests:
     run-on-projects:
         by-test-platform:
             android.*: ['mozilla-central', 'try']
+            windows10-aarch64/opt: ['try', 'mozilla-central']
             .*-qr/.*: ['release', 'try']  # skip on integration branches due to high load
             default: built-projects
     tier:
@@ -104,6 +106,7 @@ web-platform-tests-reftests:
     run-on-projects:
         by-test-platform:
             android.*: ['mozilla-central', 'try']
+            windows10-aarch64/opt: ['try', 'mozilla-central']
             linux64-qr/.*: ['release', 'try']  # skip on integration branches due to high load
             default: built-projects
     tier:
@@ -151,6 +154,7 @@ web-platform-tests-wdspec:
             - --test-type=wdspec
     run-on-projects:
         by-test-platform:
+            windows10-aarch64/opt: ['try', 'mozilla-central']
             android.*: ['mozilla-central', 'try']
             .*-qr/.*: ['release', 'try']  # skip on integration branches due to high load
             default: built-projects
diff --git a/taskcluster/ci/test/xpcshell.yml b/taskcluster/ci/test/xpcshell.yml
index 86d24bc2f313..a817671f85bb 100644
--- a/taskcluster/ci/test/xpcshell.yml
+++ b/taskcluster/ci/test/xpcshell.yml
@@ -23,6 +23,7 @@ job-defaults:
         requires-signed-builds:
             by-test-platform:
                 windows10-64-asan/opt: false    # No XPCShell on ASAN yet
+                windows10-aarch64/*: false    # No signing on arm64
                 windows.*: true
                 default: false
 
@@ -33,6 +34,7 @@ xpcshell:
     run-on-projects:
         by-test-platform:
             windows10-64-asan/opt: []  # No XPCShell on ASAN yet
+            windows10-aarch64/opt: ['try', 'mozilla-central']
             default: built-projects
     chunks:
         by-test-platform:
@@ -41,6 +43,7 @@ xpcshell:
             android-em-4.3-arm7-api-16/debug: 12
             macosx.*: 1
             windows.*: 1
+            windows10-aarch64/opt: 8
             windows10-64-ccov/debug: 8
             macosx64-ccov/debug: 8
             default: 8
diff --git a/taskcluster/taskgraph/transforms/tests.py b/taskcluster/taskgraph/transforms/tests.py
index 073c79f0c65b..14960dd205c9 100644
--- a/taskcluster/taskgraph/transforms/tests.py
+++ b/taskcluster/taskgraph/transforms/tests.py
@@ -77,6 +77,11 @@ WINDOWS_WORKER_TYPES = {
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win10-64-gpu',
       'hardware': 'releng-hardware/gecko-t-win10-64-hw',
     },
+    'windows10-aarch64': {
+      'virtual': 'test-provisioner/bitbar',
+      'virtual-with-gpu': 'test-provisioner/bitbar',
+      'hardware': 'test-provisioner/bitbar',
+    },
     'windows10-64-ccov': {
       'virtual': 'aws-provisioner-v1/gecko-t-win10-64',
       'virtual-with-gpu': 'aws-provisioner-v1/gecko-t-win10-64-gpu',
@@ -583,6 +588,7 @@ def set_treeherder_machine_platform(config, tests):
         'macosx64/debug': 'osx-10-10/debug',
         'macosx64/opt': 'osx-10-10/opt',
         'win64-asan/opt': 'windows10-64/asan',
+        'win64-aarch64/opt': 'windows10-aarch64/opt',
         'win32-pgo/opt': 'windows7-32/pgo',
         'win64-pgo/opt': 'windows10-64/pgo',
         # The build names for Android platforms have partially evolved over the
@@ -644,6 +650,7 @@ def set_tier(config, tests):
                                          'windows7-32-pgo/opt',
                                          'windows7-32-devedition/opt',
                                          'windows7-32-nightly/opt',
+                                         'windows10-aarch64/opt',
                                          'windows10-64/debug',
                                          'windows10-64/opt',
                                          'windows10-64-pgo/opt',
diff --git a/taskcluster/taskgraph/util/workertypes.py b/taskcluster/taskgraph/util/workertypes.py
index 8e9cdf97aac1..7295215fda64 100644
--- a/taskcluster/taskgraph/util/workertypes.py
+++ b/taskcluster/taskgraph/util/workertypes.py
@@ -34,6 +34,7 @@ WORKER_TYPES = {
     'aws-provisioner-v1/gecko-t-win7-32': ('generic-worker', 'windows'),
     'aws-provisioner-v1/gecko-t-win7-32-gpu': ('generic-worker', 'windows'),
     'releng-hardware/gecko-t-win7-32-hw': ('generic-worker', 'windows'),
+    'test-provisioner/bitbar': ('generic-worker', 'windows'),
     'aws-provisioner-v1/taskcluster-generic': ('docker-worker', 'linux'),
     'invalid/invalid': ('invalid', None),
     'invalid/always-optimized': ('always-optimized', None),