diff --git a/fastpair/BUILD b/fastpair/BUILD
index 4f0e025e..fe16b91e 100644
--- a/fastpair/BUILD
+++ b/fastpair/BUILD
@@ -1,6 +1,36 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+licenses(["notice"])
+
 package_group(
     name = "nearby_fastpair",
     packages = [
         "//fastpair/...",
     ],
 )
+
+cc_library(
+    name = "fastpair_controller",
+    srcs = [],
+    hdrs = [
+        "fast_pair_controller.h",
+    ],
+    copts = ["-Ithird_party"],
+    visibility = [
+        "//fastpair:__subpackages__",
+    ],
+    deps = [
+    ],
+)
diff --git a/fastpair/client/windows/BUILD b/fastpair/client/windows/BUILD
new file mode 100644
index 00000000..c7f55462
--- /dev/null
+++ b/fastpair/client/windows/BUILD
@@ -0,0 +1,61 @@
+# Copyright 2022 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     https://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+load("//third_party/lexan/build_defs:lexan.bzl", "lexan")
+
+licenses(["notice"])
+
+lexan.cc_windows_dll(
+    name = "fastpair_adapter",
+    srcs = [
+        "fast_pair_controller_adapter.cc",
+    ],
+    hdrs = [
+        "fast_pair_controller_adapter.h",
+    ],
+    copts = [
+        "-Ithird_party",
+    ],
+    defines = [
+        "_WIN32_WINNT=_WIN32_WINNT_WIN10",
+    ],
+    tags = ["windows-dll"],
+    deps = [
+        "//fastpair:fastpair_controller",
+        "@com_google_absl//absl/strings",
+    ],
+)
+
+lexan.cc_windows_dll(
+    name = "fastpair_dart",
+    srcs = [
+        "fast_pair_controller_adapter.cc",
+        "fast_pair_controller_adapter_dart.cc",
+    ],
+    hdrs = [
+        "fast_pair_controller_adapter.h",
+        "fast_pair_controller_adapter_dart.h",
+    ],
+    copts = [
+        "-Ithird_party",
+    ],
+    defines = [
+        "_WIN32_WINNT=_WIN32_WINNT_WIN10",
+    ],
+    tags = ["windows-dll"],
+    deps = [
+        "//fastpair:fastpair_controller",
+        "//third_party/dart_lang/v2:dart_api_dl",
+        "@com_google_absl//absl/strings",
+    ],
+)
diff --git a/fastpair/client/windows/fast_pair_controller_adapter.cc b/fastpair/client/windows/fast_pair_controller_adapter.cc
new file mode 100644
index 00000000..cb03a3a7
--- /dev/null
+++ b/fastpair/client/windows/fast_pair_controller_adapter.cc
@@ -0,0 +1,37 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "fastpair/client/windows/fast_pair_controller_adapter.h"
+
+namespace location {
+namespace nearby {
+namespace fastpair {
+
+FastPairController *InitFastPairController() {
+  return new FastPairController();
+}
+
+void CloseFastPairController(FastPairController *pController) {
+  if (pController != nullptr) delete pController;
+}
+
+void StartScanning(FastPairController *pController) {
+}
+
+void ServerAccess(FastPairController *pController) {
+}
+
+}  // namespace fastpair
+}  // namespace nearby
+}  // namespace location
diff --git a/fastpair/client/windows/fast_pair_controller_adapter.h b/fastpair/client/windows/fast_pair_controller_adapter.h
new file mode 100644
index 00000000..947b4643
--- /dev/null
+++ b/fastpair/client/windows/fast_pair_controller_adapter.h
@@ -0,0 +1,41 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef THIRD_PARTY_NEARBY_FASTPAIR_CLIENT_WINDOWS_FAST_PAIR_CONTROLLER_ADAPTER_H_
+#define THIRD_PARTY_NEARBY_FASTPAIR_CLIENT_WINDOWS_FAST_PAIR_CONTROLLER_ADAPTER_H_
+
+#define DLL_EXPORT extern "C" __declspec(dllexport)
+
+#include "fastpair/fast_pair_controller.h"
+
+namespace location {
+namespace nearby {
+namespace fastpair {
+
+// Initiate a default FastPairController instance.
+// Return the instance handle to client
+DLL_EXPORT FastPairController *__stdcall InitFastPairController();
+
+DLL_EXPORT void __stdcall CloseFastPairController(
+    FastPairController *pController);
+
+DLL_EXPORT void __stdcall StartScanning(FastPairController *pController);
+
+DLL_EXPORT void __stdcall ServerAccess(FastPairController *pController);
+
+}  // namespace fastpair
+}  // namespace nearby
+}  // namespace location
+
+#endif  // THIRD_PARTY_NEARBY_FASTPAIR_CLIENT_WINDOWS_FAST_PAIR_CONTROLLER_ADAPTER_H_
diff --git a/fastpair/client/windows/fast_pair_controller_adapter_dart.cc b/fastpair/client/windows/fast_pair_controller_adapter_dart.cc
new file mode 100644
index 00000000..e26fd632
--- /dev/null
+++ b/fastpair/client/windows/fast_pair_controller_adapter_dart.cc
@@ -0,0 +1,33 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#include "fastpair/client/windows/fast_pair_controller_adapter_dart.h"
+
+#include "fastpair/client/windows/fast_pair_controller_adapter.h"
+
+namespace location {
+namespace nearby {
+namespace fastpair {
+
+void StartScanningDart(FastPairController *pController) {
+  StartScanning(pController);
+}
+
+void ServerAccessDart(FastPairController *pController) {
+  ServerAccess(pController);
+}
+
+}  // namespace fastpair
+}  // namespace nearby
+}  // namespace location
diff --git a/fastpair/client/windows/fast_pair_controller_adapter_dart.h b/fastpair/client/windows/fast_pair_controller_adapter_dart.h
new file mode 100644
index 00000000..c96425f9
--- /dev/null
+++ b/fastpair/client/windows/fast_pair_controller_adapter_dart.h
@@ -0,0 +1,33 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef THIRD_PARTY_NEARBY_FASTPAIR_CLIENT_WINDOWS_FAST_PAIR_CONTROLLER_ADAPTER_DART_H_
+#define THIRD_PARTY_NEARBY_FASTPAIR_CLIENT_WINDOWS_FAST_PAIR_CONTROLLER_ADAPTER_DART_H_
+
+#include "third_party/dart_lang/v2/runtime/include/dart_api_dl.h"
+#include "fastpair/client/windows/fast_pair_controller_adapter.h"
+
+namespace location {
+namespace nearby {
+namespace fastpair {
+
+DLL_EXPORT void __stdcall StartScanningDart(FastPairController* pController);
+
+DLL_EXPORT void __stdcall ServerAccessDart(FastPairController* pController);
+
+}  // namespace fastpair
+}  // namespace nearby
+}  // namespace location
+
+#endif  // THIRD_PARTY_NEARBY_FASTPAIR_CLIENT_WINDOWS_FAST_PAIR_CONTROLLER_ADAPTER_DART_H_
diff --git a/fastpair/fast_pair_controller.h b/fastpair/fast_pair_controller.h
new file mode 100644
index 00000000..ae162a02
--- /dev/null
+++ b/fastpair/fast_pair_controller.h
@@ -0,0 +1,37 @@
+// Copyright 2022 Google LLC
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     https://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+#ifndef THIRD_PARTY_NEARBY_FASTPAIR_FAST_PAIR_CONTROLLER_H_
+#define THIRD_PARTY_NEARBY_FASTPAIR_FAST_PAIR_CONTROLLER_H_
+
+#include <functional>
+
+namespace location {
+namespace nearby {
+namespace fastpair {
+
+class FastPairController {
+ public:
+  ~FastPairController() = default;
+
+  void StartScanning();
+
+  void ServerAccess();
+};
+
+}  // namespace fastpair
+}  // namespace nearby
+}  // namespace location
+
+#endif  // THIRD_PARTY_NEARBY_FAST_PAIR_FASTPAIR_CONTROLLER_H_