diff --git a/.appveyor.yml b/.appveyor.yml
new file mode 100644
index 00000000..118a9827
--- /dev/null
+++ b/.appveyor.yml
@@ -0,0 +1,51 @@
+# Documentation: https://wiki.unvanquished.net/wiki/Continuous_integration
+
+skip_branch_with_pr: true
+
+only_commits:
+  files:
+    - .appveyor.yml
+    - example1/
+    - example2/
+    - example3/
+    # The rest of this list should stay in sync with azure-pipelines.yml
+    - crunch/
+    - crnlib/
+    - inc/
+    - CMakeLists.txt
+
+environment:
+  matrix:
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      generator: Visual Studio 16 2019
+      platform: x64
+    - APPVEYOR_BUILD_WORKER_IMAGE: Visual Studio 2019
+      generator: Visual Studio 16 2019
+      platform: win32
+
+build:
+  parallel: true
+
+build_script:
+  # simple line break: space
+  # double line break: line break
+
+  # The CFLAGS/CXXFLAGS env vars *prepend* to CMAKE_<lang>_FLAGS rather than overwriting.
+  # /Wv pins warnings to a specific compiler version so that new ones
+  # don't make the build error after Appveyor updates the compiler.
+  - cmd: >
+      echo %NUMBER_OF_PROCESSORS%
+      set CMAKE_BUILD_PARALLEL_LEVEL=%NUMBER_OF_PROCESSORS%
+
+      cmake --version
+
+      set CFLAGS=/Wv:19.29.30037
+      set CXXFLAGS=/Wv:19.29.30037
+
+      cmake
+      -Wdev -Wdeprecated
+      -G"%generator%" -A"%platform%"
+      -DBUILD_CRUNCH=ON -DBUILD_SHARED_LIBCRN=ON -DBUILD_EXAMPLES=ON
+      -S. -Bbuild
+
+      cmake --build build --config Release
diff --git a/.github/workflows/codeql.yml b/.github/workflows/codeql.yml
index 292a604b..223fcea0 100644
--- a/.github/workflows/codeql.yml
+++ b/.github/workflows/codeql.yml
@@ -69,10 +69,11 @@ jobs:
     - if: matrix.build-mode == 'manual'
       shell: bash
       run: |
-        set -x
+        set -xe
         sudo apt-get update
         sudo apt-get -y -q --no-install-recommends install ninja-build
         export CMAKE_BUILD_PARALLEL_LEVEL="$(nproc)"
+        echo "${CMAKE_BUILD_PARALLEL_LEVEL}"
         cmake -S. -Bbuild -GNinja -DBUILD_CRUNCH=ON -DBUILD_SHARED_LIBCRN=ON
         cmake --build build
 
@@ -80,4 +81,3 @@ jobs:
       uses: github/codeql-action/analyze@v3
       with:
         category: "/language:${{matrix.language}}"
-
diff --git a/azure-pipelines.yml b/azure-pipelines.yml
new file mode 100644
index 00000000..29f39ef5
--- /dev/null
+++ b/azure-pipelines.yml
@@ -0,0 +1,68 @@
+# Documentation: https://wiki.unvanquished.net/wiki/Continuous_integration
+
+trigger:
+  branches:
+    include:
+      - master
+
+pr:
+  branches:
+    include:
+      - '*'
+  paths:
+    include:
+      - azure-pipelines.yml
+      # The rest of this list should stay in sync with .appveyor.yml
+      - crunch/
+      - crnlib/
+      - inc/
+      - CMakeLists.txt
+
+strategy:
+  matrix:
+    Linux GCC:
+      VM_IMAGE: 'ubuntu-20.04'
+      C_COMPILER: gcc-8
+      CXX_COMPILER: g++-8
+      EXTRA_PACKAGES: ninja-build gcc-8 g++-8
+      INSTALL_TOOL: 'sudo apt-get update && sudo apt-get -y -q --no-install-recommends install'
+      NPROC_TOOL: 'nproc'
+    Linux Clang:
+      VM_IMAGE: 'ubuntu-20.04'
+      C_COMPILER: clang
+      CXX_COMPILER: clang++
+      EXTRA_PACKAGES: ninja-build gcc-8 g++-8
+      INSTALL_TOOL: 'sudo apt-get update && sudo apt-get -y -q --no-install-recommends install'
+      NPROC_TOOL: 'nproc'
+    MinGW:
+      VM_IMAGE: 'ubuntu-20.04'
+      C_COMPILER: x86_64-w64-mingw32-gcc
+      CXX_COMPILER: x86_64-w64-mingw32-g++
+      EXTRA_PACKAGES: gcc-mingw-w64-x86-64 g++-mingw-w64-x86-64 mingw-w64-x86-64-dev
+      INSTALL_TOOL: 'sudo apt-get update && sudo apt-get -y -q --no-install-recommends install'
+      EXTRA_INSTALLS: sudo update-alternatives --set x86_64-w64-mingw32-gcc /usr/bin/x86_64-w64-mingw32-gcc-posix ; sudo update-alternatives --set x86_64-w64-mingw32-g++ /usr/bin/x86_64-w64-mingw32-g++-posix
+      NPROC_TOOL: 'nproc'
+    Mac:
+      VM_IMAGE: 'macOS-12'
+      C_COMPILER: clang
+      CXX_COMPILER: clang++
+      BUILDER_OPTIONS: '-k 10'
+      NPROC_TOOL: 'sysctl -n hw.logicalcpu'
+
+pool:
+  vmImage: $(VM_IMAGE)
+
+steps:
+- bash: |
+    set -xe
+    [ -n "${EXTRA_PACKAGES:-}" ] && ${INSTALL_TOOL} ${EXTRA_PACKAGES}
+    [ -n "${EXTRA_INSTALLS:-}" ] && ${EXTRA_INSTALLS}
+  displayName: 'Setup'
+- bash: |
+    set -xe
+    export CMAKE_BUILD_PARALLEL_LEVEL="$(${NPROC_TOOL})"
+    echo "${CMAKE_BUILD_PARALLEL_LEVEL}"
+    cmake -GNinja -S. -Bbuild -DCMAKE_C_COMPILER=${C_COMPILER} -DCMAKE_CXX_COMPILER=${CXX_COMPILER} \
+      -DBUILD_CRUNCH=ON -DBUILD_SHARED_LIBCRN=ON -DBUILD_EXAMPLES=OFF
+    cmake --build build --config Release -- -k 0
+  displayName: 'Build'