diff --git a/.github/workflows/__all-platform-bundle.yml b/.github/workflows/__all-platform-bundle.yml
index 6715b0f77..40d6d81c9 100644
--- a/.github/workflows/__all-platform-bundle.yml
+++ b/.github/workflows/__all-platform-bundle.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   all-platform-bundle:
     strategy:
diff --git a/.github/workflows/__analyze-ref-input.yml b/.github/workflows/__analyze-ref-input.yml
index c7fb30b0f..f2f9f45a5 100644
--- a/.github/workflows/__analyze-ref-input.yml
+++ b/.github/workflows/__analyze-ref-input.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   analyze-ref-input:
     strategy:
diff --git a/.github/workflows/__autobuild-action.yml b/.github/workflows/__autobuild-action.yml
index 2e70fb853..c623ca25f 100644
--- a/.github/workflows/__autobuild-action.yml
+++ b/.github/workflows/__autobuild-action.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   autobuild-action:
     strategy:
diff --git a/.github/workflows/__autobuild-direct-tracing-with-working-dir.yml b/.github/workflows/__autobuild-direct-tracing-with-working-dir.yml
index cc5af8156..a0e3d6644 100644
--- a/.github/workflows/__autobuild-direct-tracing-with-working-dir.yml
+++ b/.github/workflows/__autobuild-direct-tracing-with-working-dir.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   autobuild-direct-tracing-with-working-dir:
     strategy:
diff --git a/.github/workflows/__autobuild-direct-tracing.yml b/.github/workflows/__autobuild-direct-tracing.yml
index 76b4f3906..aed873e57 100644
--- a/.github/workflows/__autobuild-direct-tracing.yml
+++ b/.github/workflows/__autobuild-direct-tracing.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   autobuild-direct-tracing:
     strategy:
diff --git a/.github/workflows/__build-mode-autobuild.yml b/.github/workflows/__build-mode-autobuild.yml
index 5253c4bf5..e24c170cf 100644
--- a/.github/workflows/__build-mode-autobuild.yml
+++ b/.github/workflows/__build-mode-autobuild.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   build-mode-autobuild:
     strategy:
diff --git a/.github/workflows/__build-mode-manual.yml b/.github/workflows/__build-mode-manual.yml
index 82256f969..7e1c8a7ed 100644
--- a/.github/workflows/__build-mode-manual.yml
+++ b/.github/workflows/__build-mode-manual.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   build-mode-manual:
     strategy:
diff --git a/.github/workflows/__build-mode-none.yml b/.github/workflows/__build-mode-none.yml
index d079cc764..98f3a2d31 100644
--- a/.github/workflows/__build-mode-none.yml
+++ b/.github/workflows/__build-mode-none.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   build-mode-none:
     strategy:
diff --git a/.github/workflows/__build-mode-rollback.yml b/.github/workflows/__build-mode-rollback.yml
index 3fc7530cc..64b45fade 100644
--- a/.github/workflows/__build-mode-rollback.yml
+++ b/.github/workflows/__build-mode-rollback.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   build-mode-rollback:
     strategy:
diff --git a/.github/workflows/__bundle-toolcache.yml b/.github/workflows/__bundle-toolcache.yml
index dcb1a9d47..687a29b02 100644
--- a/.github/workflows/__bundle-toolcache.yml
+++ b/.github/workflows/__bundle-toolcache.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   bundle-toolcache:
     strategy:
diff --git a/.github/workflows/__bundle-zstd.yml b/.github/workflows/__bundle-zstd.yml
index 1c10f2612..b481ea424 100644
--- a/.github/workflows/__bundle-zstd.yml
+++ b/.github/workflows/__bundle-zstd.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   bundle-zstd:
     strategy:
diff --git a/.github/workflows/__cleanup-db-cluster-dir.yml b/.github/workflows/__cleanup-db-cluster-dir.yml
index 1b7564c74..6bd5f79b6 100644
--- a/.github/workflows/__cleanup-db-cluster-dir.yml
+++ b/.github/workflows/__cleanup-db-cluster-dir.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   cleanup-db-cluster-dir:
     strategy:
diff --git a/.github/workflows/__config-export.yml b/.github/workflows/__config-export.yml
index f43d1c6a4..85118c3fa 100644
--- a/.github/workflows/__config-export.yml
+++ b/.github/workflows/__config-export.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   config-export:
     strategy:
diff --git a/.github/workflows/__config-input.yml b/.github/workflows/__config-input.yml
index 0cd73d0d8..09909e353 100644
--- a/.github/workflows/__config-input.yml
+++ b/.github/workflows/__config-input.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   config-input:
     strategy:
diff --git a/.github/workflows/__cpp-deptrace-disabled.yml b/.github/workflows/__cpp-deptrace-disabled.yml
index 0c3f203c4..92a7635ad 100644
--- a/.github/workflows/__cpp-deptrace-disabled.yml
+++ b/.github/workflows/__cpp-deptrace-disabled.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   cpp-deptrace-disabled:
     strategy:
diff --git a/.github/workflows/__cpp-deptrace-enabled-on-macos.yml b/.github/workflows/__cpp-deptrace-enabled-on-macos.yml
index 161d4d4e0..1852b4305 100644
--- a/.github/workflows/__cpp-deptrace-enabled-on-macos.yml
+++ b/.github/workflows/__cpp-deptrace-enabled-on-macos.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   cpp-deptrace-enabled-on-macos:
     strategy:
diff --git a/.github/workflows/__cpp-deptrace-enabled.yml b/.github/workflows/__cpp-deptrace-enabled.yml
index f4526f9a1..88a79b6a7 100644
--- a/.github/workflows/__cpp-deptrace-enabled.yml
+++ b/.github/workflows/__cpp-deptrace-enabled.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   cpp-deptrace-enabled:
     strategy:
diff --git a/.github/workflows/__diagnostics-export.yml b/.github/workflows/__diagnostics-export.yml
index e89c5ce83..1b8618798 100644
--- a/.github/workflows/__diagnostics-export.yml
+++ b/.github/workflows/__diagnostics-export.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   diagnostics-export:
     strategy:
diff --git a/.github/workflows/__export-file-baseline-information.yml b/.github/workflows/__export-file-baseline-information.yml
index 6dd51c3e2..72cbf23d7 100644
--- a/.github/workflows/__export-file-baseline-information.yml
+++ b/.github/workflows/__export-file-baseline-information.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   export-file-baseline-information:
     strategy:
diff --git a/.github/workflows/__extractor-ram-threads.yml b/.github/workflows/__extractor-ram-threads.yml
index 486b1cc6a..df05dff46 100644
--- a/.github/workflows/__extractor-ram-threads.yml
+++ b/.github/workflows/__extractor-ram-threads.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   extractor-ram-threads:
     strategy:
diff --git a/.github/workflows/__go-custom-queries.yml b/.github/workflows/__go-custom-queries.yml
index 9f815b237..d73ac3a62 100644
--- a/.github/workflows/__go-custom-queries.yml
+++ b/.github/workflows/__go-custom-queries.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-custom-queries:
     strategy:
diff --git a/.github/workflows/__go-indirect-tracing-workaround-diagnostic.yml b/.github/workflows/__go-indirect-tracing-workaround-diagnostic.yml
index 2208a9590..9398fedca 100644
--- a/.github/workflows/__go-indirect-tracing-workaround-diagnostic.yml
+++ b/.github/workflows/__go-indirect-tracing-workaround-diagnostic.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-indirect-tracing-workaround-diagnostic:
     strategy:
diff --git a/.github/workflows/__go-indirect-tracing-workaround-no-file-program.yml b/.github/workflows/__go-indirect-tracing-workaround-no-file-program.yml
index 63772b5dd..dbb22383e 100644
--- a/.github/workflows/__go-indirect-tracing-workaround-no-file-program.yml
+++ b/.github/workflows/__go-indirect-tracing-workaround-no-file-program.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-indirect-tracing-workaround-no-file-program:
     strategy:
diff --git a/.github/workflows/__go-indirect-tracing-workaround.yml b/.github/workflows/__go-indirect-tracing-workaround.yml
index c702b8335..830e28a9c 100644
--- a/.github/workflows/__go-indirect-tracing-workaround.yml
+++ b/.github/workflows/__go-indirect-tracing-workaround.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-indirect-tracing-workaround:
     strategy:
diff --git a/.github/workflows/__go-tracing-autobuilder.yml b/.github/workflows/__go-tracing-autobuilder.yml
index 3159b86e4..24f72b896 100644
--- a/.github/workflows/__go-tracing-autobuilder.yml
+++ b/.github/workflows/__go-tracing-autobuilder.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-tracing-autobuilder:
     strategy:
diff --git a/.github/workflows/__go-tracing-custom-build-steps.yml b/.github/workflows/__go-tracing-custom-build-steps.yml
index 1e7253fe0..e2812b92d 100644
--- a/.github/workflows/__go-tracing-custom-build-steps.yml
+++ b/.github/workflows/__go-tracing-custom-build-steps.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-tracing-custom-build-steps:
     strategy:
diff --git a/.github/workflows/__go-tracing-legacy-workflow.yml b/.github/workflows/__go-tracing-legacy-workflow.yml
index 463e2c680..e8294697d 100644
--- a/.github/workflows/__go-tracing-legacy-workflow.yml
+++ b/.github/workflows/__go-tracing-legacy-workflow.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   go-tracing-legacy-workflow:
     strategy:
diff --git a/.github/workflows/__init-with-registries.yml b/.github/workflows/__init-with-registries.yml
index d8bc2dc09..f570a05e0 100644
--- a/.github/workflows/__init-with-registries.yml
+++ b/.github/workflows/__init-with-registries.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   init-with-registries:
     strategy:
diff --git a/.github/workflows/__javascript-source-root.yml b/.github/workflows/__javascript-source-root.yml
index 873e06844..f0e66bf32 100644
--- a/.github/workflows/__javascript-source-root.yml
+++ b/.github/workflows/__javascript-source-root.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   javascript-source-root:
     strategy:
diff --git a/.github/workflows/__job-run-uuid-sarif.yml b/.github/workflows/__job-run-uuid-sarif.yml
index 410c73f8f..50539d5e9 100644
--- a/.github/workflows/__job-run-uuid-sarif.yml
+++ b/.github/workflows/__job-run-uuid-sarif.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   job-run-uuid-sarif:
     strategy:
diff --git a/.github/workflows/__language-aliases.yml b/.github/workflows/__language-aliases.yml
index 8ed3897a2..99db1af54 100644
--- a/.github/workflows/__language-aliases.yml
+++ b/.github/workflows/__language-aliases.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   language-aliases:
     strategy:
diff --git a/.github/workflows/__multi-language-autodetect.yml b/.github/workflows/__multi-language-autodetect.yml
index 9fe00c609..4d16b5fe3 100644
--- a/.github/workflows/__multi-language-autodetect.yml
+++ b/.github/workflows/__multi-language-autodetect.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   multi-language-autodetect:
     strategy:
diff --git a/.github/workflows/__overlay-init-fallback.yml b/.github/workflows/__overlay-init-fallback.yml
index ffaa6c5f8..c1fdaaf0a 100644
--- a/.github/workflows/__overlay-init-fallback.yml
+++ b/.github/workflows/__overlay-init-fallback.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   overlay-init-fallback:
     strategy:
diff --git a/.github/workflows/__packaging-codescanning-config-inputs-js.yml b/.github/workflows/__packaging-codescanning-config-inputs-js.yml
index f23752947..0d7d4cf9e 100644
--- a/.github/workflows/__packaging-codescanning-config-inputs-js.yml
+++ b/.github/workflows/__packaging-codescanning-config-inputs-js.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   packaging-codescanning-config-inputs-js:
     strategy:
diff --git a/.github/workflows/__packaging-config-inputs-js.yml b/.github/workflows/__packaging-config-inputs-js.yml
index 3f50849c8..7067a4d73 100644
--- a/.github/workflows/__packaging-config-inputs-js.yml
+++ b/.github/workflows/__packaging-config-inputs-js.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   packaging-config-inputs-js:
     strategy:
diff --git a/.github/workflows/__packaging-config-js.yml b/.github/workflows/__packaging-config-js.yml
index 79ec37222..d6bd2cf7d 100644
--- a/.github/workflows/__packaging-config-js.yml
+++ b/.github/workflows/__packaging-config-js.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   packaging-config-js:
     strategy:
diff --git a/.github/workflows/__packaging-inputs-js.yml b/.github/workflows/__packaging-inputs-js.yml
index ea7da1aab..03a81db68 100644
--- a/.github/workflows/__packaging-inputs-js.yml
+++ b/.github/workflows/__packaging-inputs-js.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   packaging-inputs-js:
     strategy:
diff --git a/.github/workflows/__quality-queries.yml b/.github/workflows/__quality-queries.yml
index 53e197436..50f24c61e 100644
--- a/.github/workflows/__quality-queries.yml
+++ b/.github/workflows/__quality-queries.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   quality-queries:
     strategy:
diff --git a/.github/workflows/__remote-config.yml b/.github/workflows/__remote-config.yml
index d83f4d43d..39a4a0623 100644
--- a/.github/workflows/__remote-config.yml
+++ b/.github/workflows/__remote-config.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   remote-config:
     strategy:
diff --git a/.github/workflows/__resolve-environment-action.yml b/.github/workflows/__resolve-environment-action.yml
index 4df9f29d6..f7ca25276 100644
--- a/.github/workflows/__resolve-environment-action.yml
+++ b/.github/workflows/__resolve-environment-action.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   resolve-environment-action:
     strategy:
diff --git a/.github/workflows/__rubocop-multi-language.yml b/.github/workflows/__rubocop-multi-language.yml
index 7e2fa6474..2ab2b5616 100644
--- a/.github/workflows/__rubocop-multi-language.yml
+++ b/.github/workflows/__rubocop-multi-language.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   rubocop-multi-language:
     strategy:
diff --git a/.github/workflows/__ruby.yml b/.github/workflows/__ruby.yml
index 27a166b6a..be9fac76e 100644
--- a/.github/workflows/__ruby.yml
+++ b/.github/workflows/__ruby.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   ruby:
     strategy:
diff --git a/.github/workflows/__rust.yml b/.github/workflows/__rust.yml
index da7d73a17..c1254ba2c 100644
--- a/.github/workflows/__rust.yml
+++ b/.github/workflows/__rust.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   rust:
     strategy:
diff --git a/.github/workflows/__split-workflow.yml b/.github/workflows/__split-workflow.yml
index 841e6b946..894701978 100644
--- a/.github/workflows/__split-workflow.yml
+++ b/.github/workflows/__split-workflow.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   split-workflow:
     strategy:
diff --git a/.github/workflows/__start-proxy.yml b/.github/workflows/__start-proxy.yml
index 52a581614..b42dd061a 100644
--- a/.github/workflows/__start-proxy.yml
+++ b/.github/workflows/__start-proxy.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   start-proxy:
     strategy:
diff --git a/.github/workflows/__submit-sarif-failure.yml b/.github/workflows/__submit-sarif-failure.yml
index d6547821c..3bd3e71cf 100644
--- a/.github/workflows/__submit-sarif-failure.yml
+++ b/.github/workflows/__submit-sarif-failure.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   submit-sarif-failure:
     strategy:
diff --git a/.github/workflows/__swift-autobuild.yml b/.github/workflows/__swift-autobuild.yml
index 116ae5837..00a47fb54 100644
--- a/.github/workflows/__swift-autobuild.yml
+++ b/.github/workflows/__swift-autobuild.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   swift-autobuild:
     strategy:
diff --git a/.github/workflows/__swift-custom-build.yml b/.github/workflows/__swift-custom-build.yml
index a5b67baeb..72482eb4f 100644
--- a/.github/workflows/__swift-custom-build.yml
+++ b/.github/workflows/__swift-custom-build.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   swift-custom-build:
     strategy:
diff --git a/.github/workflows/__test-autobuild-working-dir.yml b/.github/workflows/__test-autobuild-working-dir.yml
index c2c230f86..853836cbe 100644
--- a/.github/workflows/__test-autobuild-working-dir.yml
+++ b/.github/workflows/__test-autobuild-working-dir.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   test-autobuild-working-dir:
     strategy:
diff --git a/.github/workflows/__test-local-codeql.yml b/.github/workflows/__test-local-codeql.yml
index f4d46ad3f..116e6dd0e 100644
--- a/.github/workflows/__test-local-codeql.yml
+++ b/.github/workflows/__test-local-codeql.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   test-local-codeql:
     strategy:
diff --git a/.github/workflows/__test-proxy.yml b/.github/workflows/__test-proxy.yml
index 9420ed144..92f333059 100644
--- a/.github/workflows/__test-proxy.yml
+++ b/.github/workflows/__test-proxy.yml
@@ -27,6 +27,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   test-proxy:
     strategy:
diff --git a/.github/workflows/__unset-environment.yml b/.github/workflows/__unset-environment.yml
index 5d4ba448c..cf40679b1 100644
--- a/.github/workflows/__unset-environment.yml
+++ b/.github/workflows/__unset-environment.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   unset-environment:
     strategy:
diff --git a/.github/workflows/__upload-quality-sarif.yml b/.github/workflows/__upload-quality-sarif.yml
index e2a270148..90a1c9ef1 100644
--- a/.github/workflows/__upload-quality-sarif.yml
+++ b/.github/workflows/__upload-quality-sarif.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   upload-quality-sarif:
     strategy:
diff --git a/.github/workflows/__upload-ref-sha-input.yml b/.github/workflows/__upload-ref-sha-input.yml
index 67c54bf06..41036c61a 100644
--- a/.github/workflows/__upload-ref-sha-input.yml
+++ b/.github/workflows/__upload-ref-sha-input.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   upload-ref-sha-input:
     strategy:
diff --git a/.github/workflows/__with-checkout-path.yml b/.github/workflows/__with-checkout-path.yml
index d2fd539c6..ea694d7c6 100644
--- a/.github/workflows/__with-checkout-path.yml
+++ b/.github/workflows/__with-checkout-path.yml
@@ -37,6 +37,9 @@ on:
 defaults:
   run:
     shell: bash
+concurrency:
+  cancel-in-progress: ${{ github.event_name == 'pull_request' }}
+  group: ${{ github.workflow }}-${{ github.ref }}
 jobs:
   with-checkout-path:
     strategy:
diff --git a/pr-checks/sync.py b/pr-checks/sync.py
index 9ca49fefa..83bc27edd 100755
--- a/pr-checks/sync.py
+++ b/pr-checks/sync.py
@@ -269,6 +269,17 @@ for file in sorted((this_dir / 'checks').glob('*.yml')):
                     'shell': 'bash',
                 },
             },
+            'concurrency': {
+                # Cancel in-progress workflows in the same 'group' for pull_request events,
+                # but other event types. This should have the effect that workflows on PRs
+                # get cancelled if there is a newer workflow in the same concurrency group.
+                # For other events, the new workflows should wait until earlier ones have finished.
+                # This should help reduce the number of concurrent workflows on the repo, and
+                # consequently the number of concurrent API requests.
+                'cancel-in-progress': "${{ github.event_name == 'pull_request' }}",
+                # The group is determined by the workflow name + the ref
+                'group': "${{ github.workflow }}-${{ github.ref }}"
+            },
             'jobs': {
                 checkName: checkJob
             }