diff --git a/lib/09_use_case/data/mapper/photo_mapper.dart b/lib/09_use_case/data/mapper/photo_mapper.dart
index d270330..8239c48 100644
--- a/lib/09_use_case/data/mapper/photo_mapper.dart
+++ b/lib/09_use_case/data/mapper/photo_mapper.dart
@@ -1,5 +1,5 @@
 import '../dto/photo_result_dto.dart';
-import '../model/photo.dart';
+import '../../domain/model/photo.dart';
 
 extension ToPhoto on Hits {
   Photo toPhoto() {
diff --git a/lib/09_use_case/data/repository/photo_repository_impl.dart b/lib/09_use_case/data/repository/photo_repository_impl.dart
index eef458b..f511b17 100644
--- a/lib/09_use_case/data/repository/photo_repository_impl.dart
+++ b/lib/09_use_case/data/repository/photo_repository_impl.dart
@@ -1,9 +1,9 @@
 
 import 'package:learn_flutter_together/09_use_case/data/data_source/photo_data_source.dart';
 import 'package:learn_flutter_together/09_use_case/data/mapper/photo_mapper.dart';
-import 'package:learn_flutter_together/09_use_case/data/repository/photo_repository.dart';
+import 'package:learn_flutter_together/09_use_case/domain/repository/photo_repository.dart';
 
-import '../model/photo.dart';
+import '../../domain/model/photo.dart';
 
 class PhotoRepositoryImpl implements PhotoRepository {
   final PhotoDataSource _photoDataSource;
diff --git a/lib/09_use_case/data/model/photo.dart b/lib/09_use_case/domain/model/photo.dart
similarity index 100%
rename from lib/09_use_case/data/model/photo.dart
rename to lib/09_use_case/domain/model/photo.dart
diff --git a/lib/09_use_case/data/model/photo.freezed.dart b/lib/09_use_case/domain/model/photo.freezed.dart
similarity index 100%
rename from lib/09_use_case/data/model/photo.freezed.dart
rename to lib/09_use_case/domain/model/photo.freezed.dart
diff --git a/lib/09_use_case/data/model/photo.g.dart b/lib/09_use_case/domain/model/photo.g.dart
similarity index 100%
rename from lib/09_use_case/data/model/photo.g.dart
rename to lib/09_use_case/domain/model/photo.g.dart
diff --git a/lib/09_use_case/data/repository/photo_repository.dart b/lib/09_use_case/domain/repository/photo_repository.dart
similarity index 100%
rename from lib/09_use_case/data/repository/photo_repository.dart
rename to lib/09_use_case/domain/repository/photo_repository.dart
diff --git a/lib/09_use_case/domain/use_case/get_photos_use_case.dart b/lib/09_use_case/domain/use_case/get_photos_use_case.dart
new file mode 100644
index 0000000..73d8932
--- /dev/null
+++ b/lib/09_use_case/domain/use_case/get_photos_use_case.dart
@@ -0,0 +1,12 @@
+import '../model/photo.dart';
+import '../repository/photo_repository.dart';
+
+class GetPhotosUseCase {
+  final PhotoRepository _photoRepository;
+
+  GetPhotosUseCase(this._photoRepository);
+
+  Future<List<Photo>> execute(String query) async {
+    return (await _photoRepository.getPhotos(query)).take(3).toList();
+  }
+}
diff --git a/lib/09_use_case/main.dart b/lib/09_use_case/main.dart
index b37e96a..f3b9aff 100644
--- a/lib/09_use_case/main.dart
+++ b/lib/09_use_case/main.dart
@@ -1,4 +1,5 @@
 import 'package:flutter/material.dart';
+import 'package:learn_flutter_together/09_use_case/domain/use_case/get_photos_use_case.dart';
 import 'package:learn_flutter_together/09_use_case/presentation/search_list/search_list_screen.dart';
 import 'package:learn_flutter_together/09_use_case/presentation/search_list/search_list_view_model.dart';
 import 'package:provider/provider.dart';
@@ -24,8 +25,10 @@ class MyApp extends StatelessWidget {
       home: ChangeNotifierProvider(
         // cnp
         create: (_) => SearchListViewModel(
-          photoRepository: PhotoRepositoryImpl(
-            photoDataSource: PhotoDataSource(),
+          getPhotosUseCase: GetPhotosUseCase(
+            PhotoRepositoryImpl(
+              photoDataSource: PhotoDataSource(),
+            ),
           ),
         ),
         child: const SearchListScreen(),
diff --git a/lib/09_use_case/presentation/photo_detail/photo_detail_screen.dart b/lib/09_use_case/presentation/photo_detail/photo_detail_screen.dart
index d75212a..e28c4f8 100644
--- a/lib/09_use_case/presentation/photo_detail/photo_detail_screen.dart
+++ b/lib/09_use_case/presentation/photo_detail/photo_detail_screen.dart
@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 
-import '../../data/model/photo.dart';
+import '../../domain/model/photo.dart';
 
 class PhotoDetailScreen extends StatelessWidget {
   final Photo photo;
diff --git a/lib/09_use_case/presentation/search_list/components/image_card_widget.dart b/lib/09_use_case/presentation/search_list/components/image_card_widget.dart
index d37a621..4b9d485 100644
--- a/lib/09_use_case/presentation/search_list/components/image_card_widget.dart
+++ b/lib/09_use_case/presentation/search_list/components/image_card_widget.dart
@@ -1,6 +1,6 @@
 import 'package:flutter/material.dart';
 
-import '../../../data/model/photo.dart';
+import '../../../domain/model/photo.dart';
 
 class ImageCardWidget extends StatelessWidget {
   final Photo photo;
diff --git a/lib/09_use_case/presentation/search_list/search_list_state.dart b/lib/09_use_case/presentation/search_list/search_list_state.dart
index 63c7fb8..25054ec 100644
--- a/lib/09_use_case/presentation/search_list/search_list_state.dart
+++ b/lib/09_use_case/presentation/search_list/search_list_state.dart
@@ -1,6 +1,6 @@
 import 'package:freezed_annotation/freezed_annotation.dart';
 
-import '../../data/model/photo.dart';
+import '../../domain/model/photo.dart';
 
 part 'search_list_state.freezed.dart';
 
diff --git a/lib/09_use_case/presentation/search_list/search_list_view_model.dart b/lib/09_use_case/presentation/search_list/search_list_view_model.dart
index b94d995..450b33d 100644
--- a/lib/09_use_case/presentation/search_list/search_list_view_model.dart
+++ b/lib/09_use_case/presentation/search_list/search_list_view_model.dart
@@ -1,13 +1,14 @@
 import 'package:flutter/material.dart';
-import '../../data/repository/photo_repository.dart';
+import 'package:learn_flutter_together/09_use_case/domain/use_case/get_photos_use_case.dart';
+import '../../domain/repository/photo_repository.dart';
 import 'search_list_state.dart';
 
 class SearchListViewModel with ChangeNotifier {
-  final PhotoRepository _photoRepository;
+  final GetPhotosUseCase _getPhotosUseCase;
 
   SearchListViewModel({
-    required PhotoRepository photoRepository,
-  }) : _photoRepository = photoRepository;
+    required GetPhotosUseCase getPhotosUseCase,
+  }) : _getPhotosUseCase = getPhotosUseCase;
 
   SearchListState _state = const SearchListState();
 
@@ -18,7 +19,7 @@ class SearchListViewModel with ChangeNotifier {
     notifyListeners();
 
     _state = state.copyWith(
-      photos: await _photoRepository.getPhotos(query),
+      photos: await _getPhotosUseCase.execute(query),
       isLoading: false,
     );
     notifyListeners();