diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
deleted file mode 100644
index 204174e5f..000000000
--- a/.github/workflows/ci.yml
+++ /dev/null
@@ -1,311 +0,0 @@
-name: CI
-
-on:
-  push:
-    branches-ignore:
-      - 'main'
-      - 'docs'
-
-env:
-  BUILDER_VERSION: v0.9.63
-  BUILDER_SOURCE: releases
-  BUILDER_HOST: https://d19elf31gohf1l.cloudfront.net
-  PACKAGE_NAME: aws-crt-cpp
-  LINUX_BASE_IMAGE: ubuntu-18-x64
-  RUN: ${{ github.run_id }}-${{ github.run_number }}
-  AWS_ACCESS_KEY_ID: ${{ secrets.AWS_ACCESS_KEY_ID }}
-  AWS_SECRET_ACCESS_KEY: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
-  AWS_REGION: us-east-1
-
-# cancel in-progress builds after a new commit
-concurrency:
-  group: ${{ github.workflow }}-${{ github.ref }}
-  cancel-in-progress: true
-  
-jobs:
-  linux-compat-use-openssl:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      matrix:
-        image:
-          - fedora-34-x64
-          - opensuse-leap
-          - rhel8-x64
-    steps:
-    - name: Install qemu/docker
-      run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ matrix.image }} build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DUSE_OPENSSL=ON
-
-  # These linux-compat images need to run without -DUSE_OPENSSL because they do not have OpenSSL packages
-  # that are up-to-date (AL2) or don't provide OpenSSL development packages that is found in CMake (alpine)
-  # or are not able to connect on the socket even with the correct setup (manylinux2014)
-  linux-compat:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      fail-fast: false
-      matrix:
-        image:
-          - manylinux2014-x64
-          - manylinux2014-x86
-          - al2-x64
-          - alpine-3.16-x64
-          - alpine-3.16-x86
-          - alpine-3.16-armv6
-          - alpine-3.16-armv7
-          - alpine-3.16-arm64
-    steps:
-    - name: Install qemu/docker
-      run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ matrix.image }} build -p ${{ env.PACKAGE_NAME }}
-
-  linux-compiler-compat:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      matrix:
-        compiler:
-          - clang-3
-          - clang-6
-          - clang-8
-          - clang-9
-          - clang-10
-          - clang-11
-          - clang-12
-          - gcc-4.9
-          - gcc-5
-          - gcc-6
-          - gcc-7
-          - gcc-8
-          - gcc-9
-          - gcc-10
-          - gcc-11
-    steps:
-      # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-      - name: Build ${{ env.PACKAGE_NAME }}
-        run: |
-          aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-          ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --compiler=${{ matrix.compiler }} --cmake-extra=-DUSE_OPENSSL=ON
-
-  raspberry:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      fail-fast: false
-      matrix:
-        image:
-          - raspbian-bullseye
-    steps:
-    # set arm arch
-    - name: Install qemu/docker
-      run: docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
-
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ matrix.image }} build -p ${{ env.PACKAGE_NAME }}
-
-  std-compat:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      matrix:
-        compiler: [gcc-8, clang-9]
-        std: [c++11, c++14, c++17, c++2a]
-    steps:
-        # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-    - name: Build ${{ env.PACKAGE_NAME }} with ${{ matrix.std }}
-      run: |
-        export CXXFLAGS=-std=${{ matrix.std }}
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --compiler=${{ matrix.compiler }} --cmake-extra=-DUSE_OPENSSL=ON
-
-  byo-crypto:
-    runs-on: ubuntu-22.04 # latest
-    steps:
-        # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DBYO_CRYPTO=ON --cmake-extra=-DUSE_OPENSSL=ON
-
-  linux-shared-libs:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      matrix:
-        compiler: [gcc-4.8, gcc-11] # oldest, latest
-    steps:
-        # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --compiler=${{ matrix.compiler }} --cmake-extra=-DBUILD_SHARED_LIBS=ON
-
-  linux-openssl-static:
-    runs-on: ubuntu-22.04 # latest
-    steps:
-        # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --variant=openssl --cmake-extra=-DUSE_OPENSSL=ON
-
-  linux-openssl-shared:
-    runs-on: ubuntu-22.04 # latest
-    steps:
-        # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --variant=openssl --cmake-extra=-DUSE_OPENSSL=ON --cmake-extra=-DBUILD_SHARED_LIBS=ON
-
-  linux-no-cpu-extensions:
-    runs-on: ubuntu-22.04 # latest
-    steps:
-        # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-    - name: Build ${{ env.PACKAGE_NAME }}
-      run: |
-        aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-        ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DUSE_CPU_EXTENSIONS=OFF --cmake-extra=-DUSE_OPENSSL=ON
-
-  windows:
-    runs-on: windows-2022 # latest
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        md D:\a\work
-        cd D:\a\work
-        python -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder.pyz')"
-        python builder.pyz build -p ${{ env.PACKAGE_NAME }}
-
-  windows-vs14:
-    runs-on: windows-2019 # windows-2019 is last env with Visual Studio 2015 (v14.0)
-    strategy:
-      matrix:
-        arch: [x86, x64]
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        md D:\a\work
-        cd D:\a\work
-        python -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder.pyz')"
-        python builder.pyz build -p ${{ env.PACKAGE_NAME }} --compiler msvc-14 --target windows-${{ matrix.arch }}
-
-  windows-shared-libs:
-    runs-on: windows-2022 # latest
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        md D:\a\work
-        cd D:\a\work
-        python -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder.pyz')"
-        python builder.pyz build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DBUILD_SHARED_LIBS=ON
-
-  # Ensure users can link with /DELAYLOAD:aws-crt-cpp.dll
-  # We test by building everything using those linker flags.
-  # This will cause linker errors in the tests if an API is built wrong (assuming the API is tested).
-  # Usually the problem is extern global variables, and the fix is offering getter functions instead.
-  windows-delayload-dll:
-    runs-on: windows-2022 # latest
-    env:
-      LDFLAGS: /DELAYLOAD:aws-crt-cpp.dll
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        md D:\a\work
-        cd D:\a\work
-        python -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder.pyz')"
-        python builder.pyz build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DBUILD_SHARED_LIBS=ON
-
-  windows-no-cpu-extensions:
-    runs-on: windows-2022 # latest
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        md D:\a\work
-        cd D:\a\work
-        python -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder.pyz')"
-        python builder.pyz build -p ${{ env.PACKAGE_NAME }} --cmake-extra=-DUSE_CPU_EXTENSIONS=OFF
-
-  macos:
-    runs-on: macos-14 # latest
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        python3 -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder')"
-        chmod a+x builder
-        ./builder build -p ${{ env.PACKAGE_NAME }} --spec=downstream
-
-  macos-x64:
-    runs-on: macos-14-large # latest
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        python3 -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder')"
-        chmod a+x builder
-        ./builder build -p ${{ env.PACKAGE_NAME }} --spec=downstream
-
-  # cross-compile for iOS
-  # Skip signing the code on iOS.
-  # Otherwise it will not compile with error that Bundle identifier is missing.
-  ios-cross-compile:
-    runs-on: macos-14 # latest
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        python3 -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder')"
-        chmod a+x builder
-        ./builder build -p ${{ env.PACKAGE_NAME }} --target=ios-arm64 --cmake-extra=-DCMAKE_XCODE_ATTRIBUTE_CODE_SIGNING_ALLOWED=NO
-
-  cross_compile:
-    name: Cross Compile ${{matrix.arch}}
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      matrix:
-        arch: [linux-armv6, linux-armv7, linux-arm64, android-armv7]
-
-    steps:
-    - name: Build ${{ env.PACKAGE_NAME }} + consumers
-      run: |
-        python3 -c "from urllib.request import urlretrieve; urlretrieve('${{ env.BUILDER_HOST }}/${{ env.BUILDER_SOURCE }}/${{ env.BUILDER_VERSION }}/builder.pyz?run=${{ env.RUN }}', 'builder')"
-        chmod a+x builder
-        ./builder build -p aws-crt-cpp --spec=downstream --target=${{matrix.arch}} run_tests=false
-
-  # check that docs can still build
-  check-docs:
-    runs-on: ubuntu-22.04 # latest
-    steps:
-      - uses: actions/checkout@v4
-        with:
-          submodules: true
-      - name: Check docs
-        run: |
-          sudo apt-get install -y doxygen
-          ./make-docs.py
-
-  check-submodules:
-    runs-on: ubuntu-22.04 # latest
-    steps:
-    - name: Checkout Source
-      uses: actions/checkout@v4
-      with:
-        submodules: true
-        fetch-depth: 0
-    - name: Check Submodules
-      # note: using "@main" because "@${{env.BUILDER_VERSION}}" doesn't work
-      # https://github.com/actions/runner/issues/480
-      uses: awslabs/aws-crt-builder/.github/actions/check-submodules@main
-
-  clang-sanitizers:
-    runs-on: ubuntu-22.04 # latest
-    strategy:
-      matrix:
-        sanitizers: ["thread", "address,undefined"]
-    steps:
-      # We can't use the `uses: docker://image` version yet, GitHub lacks authentication for actions -> packages
-      - name: Build ${{ env.PACKAGE_NAME }}
-        run: |
-          aws s3 cp s3://aws-crt-test-stuff/ci/${{ env.BUILDER_VERSION }}/linux-container-ci.sh ./linux-container-ci.sh && chmod a+x ./linux-container-ci.sh
-          ./linux-container-ci.sh ${{ env.BUILDER_VERSION }} aws-crt-${{ env.LINUX_BASE_IMAGE }} build -p ${{ env.PACKAGE_NAME }} --compiler=clang-12 --cmake-extra=-DENABLE_SANITIZERS=ON --cmake-extra=-DSANITIZERS="${{ matrix.sanitizers }}"