diff --git a/src/main/java/com/example/demo/app/domain/service/CourseService.java b/src/main/java/com/example/demo/app/domain/service/CourseService.java
new file mode 100644
index 0000000..bbf92f7
--- /dev/null
+++ b/src/main/java/com/example/demo/app/domain/service/CourseService.java
@@ -0,0 +1,11 @@
+package com.example.demo.app.domain.service;
+
+import java.util.List;
+
+import com.example.demo.app.domain.model.CourseModel;
+
+public interface CourseService {
+	//
+	public List<CourseModel> findAll();
+	
+}