diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 3a88cd8d..c35054da 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -6,6 +6,16 @@ env:
   UBSAN_OPTIONS: print_stacktrace=1
 
 jobs:
+  runner-selection:
+    # runs-on: ubuntu-latest
+    runs-on: ${{ github.repository_owner == 'boostorg' && fromJSON('[ "self-hosted", "linux", "x64", "ubuntu-latest-aws" ]') || 'ubuntu-latest' }}
+    outputs:
+      labelmatrix: ${{ steps.aws_hosted_runners.outputs.labelmatrix }}
+    steps:
+      - name: AWS Hosted Runners
+        id: aws_hosted_runners
+        uses: cppalliance/aws-hosted-runners@v1.0.0
+
   posix:
     if: true
     defaults:
@@ -190,7 +200,8 @@ jobs:
             os: macos-11
             supported: true
 
-    runs-on: ${{ matrix.os }}
+    needs: [runner-selection]
+    runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)[matrix.os] }}
     container: ${{ matrix.container }}
 
     steps:
@@ -397,7 +408,8 @@ jobs:
             cxxflags: "cxxflags=-Wa,-mbig-obj"
             supported: "Too many unknowns to get this compiler working - gcc-8.1"
 
-    runs-on: ${{matrix.os}}
+    needs: [runner-selection]
+    runs-on: ${{ fromJSON(needs.runner-selection.outputs.labelmatrix)[matrix.os] }}
 
     steps:
       - uses: actions/checkout@v3
@@ -409,14 +421,24 @@ jobs:
           echo Install choco
           powershell -Command iex ((new-object net.webclient).DownloadString('https://chocolatey.org/install.ps1'))
           if "${{matrix.addrmd}}" == "64" (
-            choco install --no-progress -y openssl --x64
-            mklink /D %OPENSSL_ROOT% "C:\\Program Files\\OpenSSL"
-            refreshenv
-          ) else (
-            choco install --no-progress -y openssl --x86
-            mklink /D %OPENSSL_ROOT% "C:\\Program Files (x86)\\OpenSSL-Win32"
-            refreshenv
+            set openssl_install_flag=--x64
           )
+          if "${{matrix.addrmd}}" == "32" (
+            set openssl_install_flag=--x86
+            set openssl_install_dir="C:\\Program Files (x86)\\OpenSSL-Win32"
+          )
+
+          choco install --no-progress -y openssl %openssl_install_flag%
+
+          if "${{matrix.addrmd}}" == "64" (
+            if exist "C:\Program Files\OpenSSL\" (
+            set openssl_install_dir="C:\\Program Files\\OpenSSL"
+            ) else (
+            set openssl_install_dir="C:\\Program Files\\OpenSSL-Win64"
+            )
+          )
+          mklink /D %OPENSSL_ROOT% %openssl_install_dir%
+          refreshenv
           set
 
       - name: Setup Boost