diff --git a/src/main/java/com/example/demo/app/domain/service/CategoryService.java b/src/main/java/com/example/demo/app/domain/service/CategoryService.java
new file mode 100644
index 0000000..3baccd4
--- /dev/null
+++ b/src/main/java/com/example/demo/app/domain/service/CategoryService.java
@@ -0,0 +1,10 @@
+package com.example.demo.app.domain.service;
+
+import java.util.List;
+
+import com.example.demo.app.domain.model.CategoryModel;
+
+public interface CategoryService {
+
+	public List<CategoryModel> findAll();
+}
diff --git a/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java b/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java
new file mode 100644
index 0000000..7e5af4c
--- /dev/null
+++ b/src/main/java/com/example/demo/app/domain/service/impl/CategoryServiceImpl.java
@@ -0,0 +1,25 @@
+package com.example.demo.app.domain.service.impl;
+
+import java.util.List;
+
+import org.springframework.stereotype.Service;
+
+import com.example.demo.app.domain.model.CategoryModel;
+import com.example.demo.app.domain.service.CategoryService;
+import com.example.demo.app.infra.repository.CategoryRepository;
+
+import lombok.RequiredArgsConstructor;
+
+@Service
+@RequiredArgsConstructor
+public class CategoryServiceImpl implements CategoryService{
+
+	private final CategoryRepository categoryRepository;
+	
+	public List<CategoryModel> findAll() {
+		
+		return CategoryModel.convertFrom(categoryRepository.findAll());
+		
+	}
+	
+}