diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 084a2857e08de8..5d3c183a7ad6df 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -174,130 +174,9 @@ jobs:
       run: .\python.bat -m test.pythoninfo
     - name: Tests
       run: .\PCbuild\rt.bat -p x64 -q -uall -u-cpu -rwW --slowest --timeout=1200 -j0
-
-  build_macos:
-    name: 'macOS'
-    runs-on: macos-latest
-    needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true'
-    env:
-      HOMEBREW_NO_ANALYTICS: 1
-      HOMEBREW_NO_AUTO_UPDATE: 1
-      HOMEBREW_NO_INSTALL_CLEANUP: 1
-      PYTHONSTRICTEXTENSIONBUILD: 1
-    steps:
-    - uses: actions/checkout@v4
-    - name: Install Homebrew dependencies
-      run: |
-        brew install pkg-config openssl@3.0 xz gdbm tcl-tk@8
-        # Because alternate versions are not symlinked into place by default:
-        brew link tcl-tk@8
-    - name: Configure CPython
-      run: |
-        CPPFLAGS="-I$(brew --prefix gdbm)/include -I$(brew --prefix xz)/include" \
-        LDFLAGS="-L$(brew --prefix gdbm)/lib -L$(brew --prefix xz)/lib" \
-        ./configure \
-          --with-pydebug \
-          --prefix=/opt/python-dev \
-          --with-openssl="$(brew --prefix openssl@3.0)" \
-          --with-dbmliborder=gdbm:ndbm
-      # (--with-dbmliborder needed for homebrew's gdbm 1.24: see gh-89452)
-    - name: Build CPython
-      run: make -j4
-    - name: Display build info
-      run: make pythoninfo
-    - name: Tests
-      run: make buildbottest TESTOPTS="-j4 -uall,-cpu"
-
-  build_ubuntu:
-    name: 'Ubuntu'
-    runs-on: ubuntu-24.04
-    needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true'
-    env:
-      OPENSSL_VER: 3.0.11
-      PYTHONSTRICTEXTENSIONBUILD: 1
-    steps:
-    - uses: actions/checkout@v4
-    - name: Register gcc problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
-    - name: Install dependencies
-      run: sudo ./.github/workflows/posix-deps-apt.sh
-    - name: Configure OpenSSL env vars
-      run: |
-        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> "$GITHUB_ENV"
-        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> "$GITHUB_ENV"
-        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> "$GITHUB_ENV"
-    - name: 'Restore OpenSSL build'
-      id: cache-openssl
-      uses: actions/cache@v4
-      with:
-        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
-    - name: Install OpenSSL
-      if: steps.cache-openssl.outputs.cache-hit != 'true'
-      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
-    - name: Configure ccache action
-      uses: hendrikmuhs/ccache-action@v1
-    - name: Configure CPython
-      run: ./configure --with-pydebug --with-openssl=$OPENSSL_DIR
-    - name: Build CPython
-      run: make -j4
-    - name: Display build info
-      run: make pythoninfo
-    - name: Tests
-      run: xvfb-run make buildbottest TESTOPTS="-j4 -uall,-cpu"
-
-  build_ubuntu_ssltests:
-    name: 'Ubuntu SSL tests with OpenSSL'
-    runs-on: ubuntu-24.04
-    timeout-minutes: 60
-    needs: check_source
-    if: needs.check_source.outputs.run_tests == 'true' && needs.check_source.outputs.run_ssl_tests == 'true'
-    strategy:
-      fail-fast: false
-      matrix:
-        openssl_ver: [1.1.1w, 3.0.11, 3.1.3]
-    env:
-      OPENSSL_VER: ${{ matrix.openssl_ver }}
-      MULTISSL_DIR: ${{ github.workspace }}/multissl
-      OPENSSL_DIR: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}
-      LD_LIBRARY_PATH: ${{ github.workspace }}/multissl/openssl/${{ matrix.openssl_ver }}/lib
-    steps:
-    - uses: actions/checkout@v4
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
       with:
-        persist-credentials: false
-    - name: Register gcc problem matcher
-      run: echo "::add-matcher::.github/problem-matchers/gcc.json"
-    - name: Install dependencies
-      run: sudo ./.github/workflows/posix-deps-apt.sh
-    - name: Configure OpenSSL env vars
-      run: |
-        echo "MULTISSL_DIR=${GITHUB_WORKSPACE}/multissl" >> "$GITHUB_ENV"
-        echo "OPENSSL_DIR=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}" >> "$GITHUB_ENV"
-        echo "LD_LIBRARY_PATH=${GITHUB_WORKSPACE}/multissl/openssl/${OPENSSL_VER}/lib" >> "$GITHUB_ENV"
-    - name: 'Restore OpenSSL build'
-      id: cache-openssl
-      uses: actions/cache@v4
-      with:
-        path: ./multissl/openssl/${{ env.OPENSSL_VER }}
-        key: ${{ runner.os }}-multissl-openssl-${{ env.OPENSSL_VER }}
-    - name: Install OpenSSL
-      if: steps.cache-openssl.outputs.cache-hit != 'true'
-      run: python3 Tools/ssl/multissltests.py --steps=library --base-directory $MULTISSL_DIR --openssl $OPENSSL_VER --system Linux
-    - name: Add ccache to PATH
-      run: |
-        echo "PATH=/usr/lib/ccache:$PATH" >> "$GITHUB_ENV"
-    - name: Configure ccache action
-      uses: hendrikmuhs/ccache-action@v1.2
-    - name: Configure CPython
-      run: ./configure --with-pydebug --with-openssl=$OPENSSL_DIR
-    - name: Build CPython
-      run: make -j4
-    - name: Display build info
-      run: make pythoninfo
-    - name: SSL tests
-      run: ./python Lib/test/ssltests.py
+        name: build-artifacts
+        path: |
+          PCbuild/amd64/
diff --git a/.github/workflows/build_msi.yml b/.github/workflows/build_msi.yml
index de099a5c7da505..916ab13e3068a0 100644
--- a/.github/workflows/build_msi.yml
+++ b/.github/workflows/build_msi.yml
@@ -36,7 +36,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build CPython installer
-      run: .\Tools\msi\build.bat --doc -x86
+      run: .\Tools\msi\buildrelease.bat -x64
 
   build_win_amd64:
     name: 'Windows (x64) Installer'
@@ -44,4 +44,10 @@ jobs:
     steps:
     - uses: actions/checkout@v4
     - name: Build CPython installer
-      run: .\Tools\msi\build.bat --doc -x64
+      run: .\Tools\msi\buildrelease.bat -x64
+    - name: Upload artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: build-artifacts
+        path: |
+          PCbuild/amd64/