diff --git a/backends/cortex_m/test/BUCK b/backends/cortex_m/test/BUCK
index 5630c928299..a715de08a4b 100644
--- a/backends/cortex_m/test/BUCK
+++ b/backends/cortex_m/test/BUCK
@@ -1,3 +1,5 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
+oncall("executorch")
 # Copyright (c) Meta Platforms, Inc. and affiliates.
 # All rights reserved.
 #
@@ -6,6 +8,32 @@
 
 load("targets.bzl", "define_common_targets")
 
-oncall("executorch")
 
-define_common_targets()
+non_fbcode_target(_kind = define_common_targets,)
+
+# !!!! fbcode/executorch/backends/cortex_m/test/TARGETS was merged into this file, see https://fburl.com/workplace/xl8l9yuo for more info !!!!
+
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+load("@fbcode_macros//build_defs:python_unittest.bzl", "python_unittest")
+load("targets.bzl", "define_common_targets")
+
+fbcode_target(_kind = python_unittest,
+    name="test_replace_quant_nodes",
+    srcs=[
+        "test_helpers_passes_utils.py",
+        "test_replace_quant_nodes.py",
+    ],
+    deps=[
+        "//pytorch/ao:torchao",  # @manual
+        "//caffe2:torch",
+        "//executorch/backends/cortex_m/passes:replace_quant_nodes_pass",
+        "//executorch/backends/cortex_m/ops:ops",
+    ],
+)
+
+fbcode_target(_kind = define_common_targets,)
diff --git a/backends/cortex_m/test/TARGETS b/backends/cortex_m/test/TARGETS
deleted file mode 100644
index 292a087a88a..00000000000
--- a/backends/cortex_m/test/TARGETS
+++ /dev/null
@@ -1,25 +0,0 @@
-# Copyright (c) Meta Platforms, Inc. and affiliates.
-# All rights reserved.
-#
-# This source code is licensed under the BSD-style license found in the
-# LICENSE file in the root directory of this source tree.
-
-load("@fbcode_macros//build_defs:python_unittest.bzl", "python_unittest")
-load("targets.bzl", "define_common_targets")
-
-oncall("executorch")
-python_unittest(
-    name="test_replace_quant_nodes",
-    srcs=[
-        "test_helpers_passes_utils.py",
-        "test_replace_quant_nodes.py",
-    ],
-    deps=[
-        "//pytorch/ao:torchao",  # @manual
-        "//caffe2:torch",
-        "//executorch/backends/cortex_m/passes:replace_quant_nodes_pass",
-        "//executorch/backends/cortex_m/ops:ops",
-    ],
-)
-
-define_common_targets()
diff --git a/backends/cuda/TARGETS b/backends/cuda/BUCK
similarity index 83%
rename from backends/cuda/TARGETS
rename to backends/cuda/BUCK
index d1cf4216bf7..9af7687efc9 100644
--- a/backends/cuda/TARGETS
+++ b/backends/cuda/BUCK
@@ -1,8 +1,9 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
 
 oncall("executorch")
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "cuda_passes",
     srcs = [
         "passes/__init__.py",
@@ -16,7 +17,7 @@ runtime.python_library(
     ],
 )
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "cuda_backend",
     srcs = [
         "cuda_backend.py",
@@ -36,7 +37,7 @@ runtime.python_library(
     ],
 )
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "cuda_partitioner",
     srcs = [
         "cuda_partitioner.py",
@@ -50,7 +51,7 @@ runtime.python_library(
     ],
 )
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "triton_kernels",
     srcs = [
         "triton/kernels/__init__.py",
@@ -67,7 +68,7 @@ runtime.python_library(
     ],
 )
 
-runtime.python_library(
+fbcode_target(_kind = runtime.python_library,
     name = "triton_replacement_pass",
     srcs = [
         "triton/__init__.py",
diff --git a/backends/cuda/runtime/TARGETS b/backends/cuda/runtime/BUCK
similarity index 91%
rename from backends/cuda/runtime/TARGETS
rename to backends/cuda/runtime/BUCK
index f13f41ab8b7..f71622d7241 100644
--- a/backends/cuda/runtime/TARGETS
+++ b/backends/cuda/runtime/BUCK
@@ -1,9 +1,10 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
 load("@fbsource//xplat/executorch/build:runtime_wrapper.bzl", "runtime")
-load("//tools/build/buck:nvcc_flags.bzl", "get_nvcc_arch_args")
+load("@fbcode//tools/build/buck:nvcc_flags.bzl", "get_nvcc_arch_args")
 
 oncall("executorch")
 
-runtime.cxx_library(
+fbcode_target(_kind = runtime.cxx_library,
     name = "cuda_platform",
     srcs = [
         "platform/platform.cpp",
@@ -27,7 +28,7 @@ runtime.cxx_library(
     ],
 )
 
-runtime.cxx_library(
+fbcode_target(_kind = runtime.cxx_library,
     name = "runtime_shims",
     srcs = [
         "shims/cuda_guard.cpp",
@@ -74,7 +75,7 @@ runtime.cxx_library(
     ],
 )
 
-runtime.cxx_library(
+fbcode_target(_kind = runtime.cxx_library,
     name = "cuda_backend",
     srcs = [
         "cuda_backend.cpp",
diff --git a/backends/cuda/runtime/shims/tests/BUCK b/backends/cuda/runtime/shims/tests/BUCK
new file mode 100644
index 00000000000..e1f13b4db7f
--- /dev/null
+++ b/backends/cuda/runtime/shims/tests/BUCK
@@ -0,0 +1,7 @@
+load("@fbcode_macros//build_defs:build_file_migration.bzl", "fbcode_target", "non_fbcode_target")
+load("@fbcode_macros//build_defs:cpp_unittest.bzl", "cpp_unittest")
+load(":targets.bzl", "define_common_targets")
+
+oncall("executorch")
+
+fbcode_target(_kind = define_common_targets,)
diff --git a/backends/cuda/runtime/shims/tests/TARGETS b/backends/cuda/runtime/shims/tests/TARGETS
deleted file mode 100644
index 9ff3e83a8bd..00000000000
--- a/backends/cuda/runtime/shims/tests/TARGETS
+++ /dev/null
@@ -1,6 +0,0 @@
-load("@fbcode_macros//build_defs:cpp_unittest.bzl", "cpp_unittest")
-load(":targets.bzl", "define_common_targets")
-
-oncall("executorch")
-
-define_common_targets()