diff --git a/packages/cdn_bench/install_cdn_bench.sh b/packages/cdn_bench/install_cdn_bench.sh
index eba5367d..880a43c9 100755
--- a/packages/cdn_bench/install_cdn_bench.sh
+++ b/packages/cdn_bench/install_cdn_bench.sh
@@ -6,8 +6,8 @@
 
 # Install script for the CDN Benchmark (foss_revproxy).
 #
-# Builds proxygen and all dependencies from source, then builds the
-# foss_revproxy binaries (traffic_client, proxy_server, content_server).
+# Internal (Meta):  Binaries available by packaging in BUCK path_actions
+# External (OSS):   Builds proxygen and foss_revproxy from source.
 #
 # Binaries are installed to benchmarks/cdn_bench/ relative to BENCHPRESS_ROOT.
 
@@ -38,9 +38,28 @@ is_meta_internal() {
 }
 
 ##############################################################################
-# Ensure prerequisites (git, internet) are available
+# Internal install: binaries are pre-bundled in the cea.chips.benchpress fbpkg
 ##############################################################################
-ensure_prerequisites() {
+install_internal() {
+  echo -e "${COLOR_GREEN}[ INFO ] Meta internal — using pre-bundled binaries from benchpress fbpkg${COLOR_OFF}"
+  # The binaries are placed at benchmarks/cdn_bench/ by the fbpkg path_actions.
+  for bin in traffic_client proxy_server content_server; do
+    if [ ! -f "${INSTALL_DIR}/${bin}" ]; then
+      echo -e "${COLOR_RED}[ ERROR ] Expected pre-bundled binary not found: ${INSTALL_DIR}/${bin}${COLOR_OFF}"
+      echo -e "${COLOR_RED}[ ERROR ] Pre-bundled binaries missing. Ensure you are running from a cea.chips.benchpress fbpkg that includes cdn_bench targets.${COLOR_OFF}"
+      exit 1
+    fi
+  done
+  chmod +x "${INSTALL_DIR}/traffic_client" "${INSTALL_DIR}/proxy_server" "${INSTALL_DIR}/content_server"
+  echo -e "${COLOR_GREEN}[ INFO ] Pre-bundled binaries verified at ${INSTALL_DIR}${COLOR_OFF}"
+}
+
+##############################################################################
+# External install: build from source
+##############################################################################
+install_external() {
+  echo -e "${COLOR_GREEN}[ INFO ] External install — building from source${COLOR_OFF}"
+
   if ! command -v git &>/dev/null; then
     echo -e "${COLOR_GREEN}[ INFO ] Installing git${COLOR_OFF}"
     if command -v dnf &>/dev/null; then
@@ -53,90 +72,93 @@ ensure_prerequisites() {
     fi
   fi
 
-  # On Meta edge hosts, enable outbound internet via the standard forward proxy
   if is_meta_internal; then
-    echo -e "TODO: Implement internal installation mechanism compatible with edge hosts(next diff)"
+    echo -e "${COLOR_RED}[ ERROR ] External source build should not be used internally — use install_internal() path${COLOR_OFF}"
+    exit 1
   fi
-}
-
-ensure_prerequisites
-
-echo -e "${COLOR_GREEN}=== CDN Benchmark Install ===${COLOR_OFF}"
-echo -e "${COLOR_GREEN}Package dir:    ${CDN_PACKAGE_DIR}${COLOR_OFF}"
-echo -e "${COLOR_GREEN}Build dir:      ${BUILD_DIR}${COLOR_OFF}"
-echo -e "${COLOR_GREEN}Install dir:    ${INSTALL_DIR}${COLOR_OFF}"
-echo -e "${COLOR_GREEN}Parallelism:    ${JOBS} jobs${COLOR_OFF}"
-
-# Check if already installed
-if [ -x "${INSTALL_DIR}/traffic_client" ] && \
-   [ -x "${INSTALL_DIR}/proxy_server" ] && \
-   [ -x "${INSTALL_DIR}/content_server" ]; then
-  echo -e "${COLOR_GREEN}CDN Benchmark binaries already installed, skipping build${COLOR_OFF}"
-  echo -e "${COLOR_GREEN}To force reinstall, run: rm -rf ${INSTALL_DIR}${COLOR_OFF}"
-  exit 0
-fi
-
-mkdir -p "${BUILD_DIR}" "${INSTALL_DIR}"
 
+  mkdir -p "${BUILD_DIR}" "${INSTALL_DIR}"
 ##############################################################################
-# Step 1: Clone proxygen at pinned version
+  # Step 1: Clone proxygen at pinned version
 ##############################################################################
-PROXYGEN_SRC="${BUILD_DIR}/proxygen"
-if [ ! -d "${PROXYGEN_SRC}" ]; then
-  echo -e "${COLOR_GREEN}[ INFO ] Cloning proxygen ${PROXYGEN_GIT_TAG}${COLOR_OFF}"
-  git clone --depth 1 --branch "${PROXYGEN_GIT_TAG}" \
-    "${PROXYGEN_GIT_REPO}" "${PROXYGEN_SRC}"
-else
-  echo -e "${COLOR_GREEN}[ INFO ] Proxygen source already present, skipping clone${COLOR_OFF}"
-fi
+  PROXYGEN_SRC="${BUILD_DIR}/proxygen"
+  if [ ! -d "${PROXYGEN_SRC}" ]; then
+    echo -e "${COLOR_GREEN}[ INFO ] Cloning proxygen ${PROXYGEN_GIT_TAG}${COLOR_OFF}"
+    git clone --depth 1 --branch "${PROXYGEN_GIT_TAG}" \
+      "${PROXYGEN_GIT_REPO}" "${PROXYGEN_SRC}"
+  else
+    echo -e "${COLOR_GREEN}[ INFO ] Proxygen source already present, skipping clone${COLOR_OFF}"
+  fi
 
 ##############################################################################
-# Step 2: Build proxygen and all dependencies
+  # Step 2: Build proxygen and all dependencies
 ##############################################################################
 DEPS_DIR="${BUILD_DIR}/deps"
-echo -e "${COLOR_GREEN}[ INFO ] Building proxygen and dependencies${COLOR_OFF}"
-bash "${CDN_PACKAGE_DIR}/build_proxygen.sh" \
-  -j "${JOBS}" \
-  --proxygen-dir "${PROXYGEN_SRC}" \
-  -p "${DEPS_DIR}"
+  echo -e "${COLOR_GREEN}[ INFO ] Building proxygen and dependencies${COLOR_OFF}"
+  bash "${CDN_PACKAGE_DIR}/build_proxygen.sh" \
+    -j "${JOBS}" \
+    --proxygen-dir "${PROXYGEN_SRC}" \
+    -p "${DEPS_DIR}"
 
 ##############################################################################
 # Step 3: Build foss_revproxy
 ##############################################################################
-FOSS_REVPROXY_SRC_DIR="${CDN_PACKAGE_DIR}/src"
+  FOSS_REVPROXY_SRC_DIR="${CDN_PACKAGE_DIR}/src"
 
-if [ ! -f "${FOSS_REVPROXY_SRC_DIR}/CMakeLists.txt" ]; then
-  echo -e "${COLOR_RED}[ ERROR ] CMakeLists.txt not found at: ${FOSS_REVPROXY_SRC_DIR}${COLOR_OFF}"
-  exit 1
-fi
+  if [ ! -f "${FOSS_REVPROXY_SRC_DIR}/CMakeLists.txt" ]; then
+    echo -e "${COLOR_RED}[ ERROR ] CMakeLists.txt not found at: ${FOSS_REVPROXY_SRC_DIR}${COLOR_OFF}"
+    exit 1
+  fi
 
-if [ ! -d "${FOSS_REVPROXY_SRC_DIR}/ti/foss_revproxy" ]; then
-  echo -e "${COLOR_RED}[ ERROR ] foss_revproxy source not found at: ${FOSS_REVPROXY_SRC_DIR}/ti/foss_revproxy${COLOR_OFF}"
-  exit 1
-fi
+  if [ ! -d "${FOSS_REVPROXY_SRC_DIR}/ti/foss_revproxy" ]; then
+    echo -e "${COLOR_RED}[ ERROR ] foss_revproxy source not found at: ${FOSS_REVPROXY_SRC_DIR}/ti/foss_revproxy${COLOR_OFF}"
+    exit 1
+  fi
 
-echo -e "${COLOR_GREEN}[ INFO ] Building foss_revproxy${COLOR_OFF}"
-FOSS_BUILD_DIR="${BUILD_DIR}/foss_revproxy_build"
-mkdir -p "${FOSS_BUILD_DIR}"
-cd "${FOSS_BUILD_DIR}"
+  echo -e "${COLOR_GREEN}[ INFO ] Building foss_revproxy${COLOR_OFF}"
+  FOSS_BUILD_DIR="${BUILD_DIR}/foss_revproxy_build"
+  mkdir -p "${FOSS_BUILD_DIR}"
+  cd "${FOSS_BUILD_DIR}"
 
-cmake \
-  -DCMAKE_BUILD_TYPE=RelWithDebInfo \
-  -DCMAKE_PREFIX_PATH="${DEPS_DIR}" \
-  -DCMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
-  -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
-  "${FOSS_REVPROXY_SRC_DIR}"
+  cmake \
+    -DCMAKE_BUILD_TYPE=RelWithDebInfo \
+    -DCMAKE_PREFIX_PATH="${DEPS_DIR}" \
+    -DCMAKE_INSTALL_PREFIX="${INSTALL_DIR}" \
+    -DCMAKE_POSITION_INDEPENDENT_CODE=ON \
+    "${FOSS_REVPROXY_SRC_DIR}"
 
-make -j "${JOBS}"
+  make -j "${JOBS}"
 
 ##############################################################################
-# Step 4: Install binaries
+  # Step 4: Install binaries
 ##############################################################################
-echo -e "${COLOR_GREEN}[ INFO ] Installing binaries to ${INSTALL_DIR}${COLOR_OFF}"
-cp -f "${FOSS_BUILD_DIR}/traffic_client" "${INSTALL_DIR}/"
-cp -f "${FOSS_BUILD_DIR}/proxy_server" "${INSTALL_DIR}/"
-cp -f "${FOSS_BUILD_DIR}/content_server" "${INSTALL_DIR}/"
-chmod +x "${INSTALL_DIR}/traffic_client" "${INSTALL_DIR}/proxy_server" "${INSTALL_DIR}/content_server"
+  echo -e "${COLOR_GREEN}[ INFO ] Installing binaries to ${INSTALL_DIR}${COLOR_OFF}"
+  cp -f "${FOSS_BUILD_DIR}/traffic_client" "${INSTALL_DIR}/"
+  cp -f "${FOSS_BUILD_DIR}/proxy_server" "${INSTALL_DIR}/"
+  cp -f "${FOSS_BUILD_DIR}/content_server" "${INSTALL_DIR}/"
+  chmod +x "${INSTALL_DIR}/traffic_client" "${INSTALL_DIR}/proxy_server" "${INSTALL_DIR}/content_server"
+}
+
+##############################################################################
+# Main
+##############################################################################
+echo -e "${COLOR_GREEN}=== CDN Benchmark Install ===${COLOR_OFF}"
+echo -e "${COLOR_GREEN}Install dir:    ${INSTALL_DIR}${COLOR_OFF}"
+
+# Check if already installed
+if [ -x "${INSTALL_DIR}/traffic_client" ] && \
+   [ -x "${INSTALL_DIR}/proxy_server" ] && \
+   [ -x "${INSTALL_DIR}/content_server" ]; then
+  echo -e "${COLOR_GREEN}CDN Benchmark binaries already installed, skipping${COLOR_OFF}"
+  echo -e "${COLOR_GREEN}To force reinstall, run: rm -rf ${INSTALL_DIR}${COLOR_OFF}"
+  exit 0
+fi
+
+if is_meta_internal; then
+  install_internal
+else
+  install_external
+fi
 
 echo -e "${COLOR_GREEN}=== CDN Benchmark Install Complete ===${COLOR_OFF}"
 echo -e "${COLOR_GREEN}Binaries installed:${COLOR_OFF}"