diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 53f9dc4ef4..54b40a3895 100644
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -1,5 +1,4 @@
-#***************************************************************************
-#                                  _   _ ____  _
+#*************************************************************************** #                                  _   _ ____  _
 #  Project                     ___| | | |  _ \| |
 #                             / __| | | | |_) | |
 #                            | (__| |_| |  _ <| |___
@@ -21,9 +20,9 @@
 # SPDX-License-Identifier: curl
 #
 ###########################################################################
-# Starter pipeline
-# Start with a minimal pipeline that you can customize to build and deploy your code.
-# Add steps that build, run tests, deploy, and more:
+# https://dev.azure.com/daniel0244/curl/_build?view=runs
+#
+# Azure Pipelines configuration:
 # https://aka.ms/yaml
 
 trigger:
@@ -31,6 +30,14 @@ trigger:
     include:
     - 'master'
     - '*/ci'
+  paths:
+    exclude:
+    - '.circleci/*'
+    - '.cirrus.yml'
+    - '.github/*'
+    - 'appveyor.yml'
+    - 'packages/*'
+    - 'plan9/*'
 
 pr:
   branches:
diff --git a/.cirrus.yml b/.cirrus.yml
index 309491a63e..574f85cb79 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -21,10 +21,23 @@
 # SPDX-License-Identifier: curl
 #
 ###########################################################################
-# Cirrus CI configuration
 # https://cirrus-ci.com/github/curl/curl
+#
+# Cirrus CI configuration:
+# https://cirrus-ci.org/guide/writing-tasks/
 
 freebsd_task:
+  skip: "changesIncludeOnly(
+    '.azure-pipelines.yml',
+    '.circleci/**',
+    '.github/**',
+    'appveyor.yml',
+    'packages/**',
+    'plan9/**',
+    'projects/**',
+    'winbuild/**'
+    )"
+
   name: FreeBSD
 
   matrix:
@@ -77,6 +90,15 @@ freebsd_task:
     - make V=1 install
 
 windows_task:
+  skip: "changesIncludeOnly(
+    '.azure-pipelines.yml',
+    '.circleci/**',
+    '.github/**',
+    'appveyor.yml',
+    'packages/**',
+    'plan9/**'
+    )"
+
   name: Windows
   timeout_in: 120m
   windows_container:
@@ -135,6 +157,17 @@ windows_task:
     %container_cmd% -l -c "cd $(echo '%cd%') && %make_cmd% TFLAGS='!IDN !SCP ~612 ~1056 %tests%' test-ci"
 
 macos_task:
+  skip: "changesIncludeOnly(
+    '.azure-pipelines.yml',
+    '.circleci/**',
+    '.github/**',
+    'appveyor.yml',
+    'packages/**',
+    'plan9/**',
+    'projects/**',
+    'winbuild/**'
+    )"
+
   name: macOS arm64
   macos_instance:
     image: ghcr.io/cirruslabs/macos-ventura-xcode:latest
diff --git a/.github/workflows/codeql-analysis.yml b/.github/workflows/codeql-analysis.yml
index 83cab5a7a2..c7f6107d5d 100644
--- a/.github/workflows/codeql-analysis.yml
+++ b/.github/workflows/codeql-analysis.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   schedule:
     - cron: '0 0 * * 4'
 
diff --git a/.github/workflows/fuzz.yml b/.github/workflows/fuzz.yml
index 7eda654c7a..520be76359 100644
--- a/.github/workflows/fuzz.yml
+++ b/.github/workflows/fuzz.yml
@@ -9,9 +9,28 @@ on:
     branches:
     - master
     - '*/ci'
+    paths-ignore:
+    - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
+    paths-ignore:
+    - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index deba3dd391..13f9ae749d 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
diff --git a/.github/workflows/macos.yml b/.github/workflows/macos.yml
index e50011e542..6733c89324 100644
--- a/.github/workflows/macos.yml
+++ b/.github/workflows/macos.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.event.pull_request.number || github.sha }}
diff --git a/.github/workflows/ngtcp2-gnutls.yml b/.github/workflows/ngtcp2-gnutls.yml
index 56c0776f1d..17f2471127 100644
--- a/.github/workflows/ngtcp2-gnutls.yml
+++ b/.github/workflows/ngtcp2-gnutls.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/ngtcp2-quictls.yml b/.github/workflows/ngtcp2-quictls.yml
index 5ceefa5896..913a100b7b 100644
--- a/.github/workflows/ngtcp2-quictls.yml
+++ b/.github/workflows/ngtcp2-quictls.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/ngtcp2-wolfssl.yml b/.github/workflows/ngtcp2-wolfssl.yml
index ceb4c12a67..dab8ada026 100644
--- a/.github/workflows/ngtcp2-wolfssl.yml
+++ b/.github/workflows/ngtcp2-wolfssl.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/pytest.yml b/.github/workflows/pytest.yml
index 2fc33e89c6..28bee20801 100644
--- a/.github/workflows/pytest.yml
+++ b/.github/workflows/pytest.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/torture.yml b/.github/workflows/torture.yml
index c3ed352060..612ad6a4af 100644
--- a/.github/workflows/torture.yml
+++ b/.github/workflows/torture.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/.github/workflows/wolfssl.yml b/.github/workflows/wolfssl.yml
index 08c15db49d..86d859e6a6 100644
--- a/.github/workflows/wolfssl.yml
+++ b/.github/workflows/wolfssl.yml
@@ -11,11 +11,27 @@ on:
     - '*/ci'
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
   pull_request:
     branches:
     - master
     paths-ignore:
     - '**/*.md'
+    - '.azure-pipelines.yml'
+    - '.circleci/**'
+    - '.cirrus.yml'
+    - 'appveyor.yml'
+    - 'packages/**'
+    - 'plan9/**'
+    - 'projects/**'
+    - 'winbuild/**'
 
 concurrency:
   # Hardcoded workflow filename as workflow name above is just Linux again
diff --git a/appveyor.yml b/appveyor.yml
index 845839f985..ca8efcb9fd 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -21,6 +21,9 @@
 # SPDX-License-Identifier: curl
 #
 ###########################################################################
+# https://ci.appveyor.com/project/curlorg/curl/history
+# Appveyor configuration
+# https://www.appveyor.com/docs/appveyor-yml/
 
 version: 7.50.0.{build}