diff --git a/src/main/java/com/acquirex/AcquirexApplication.java b/src/main/java/com/acquirex/AcquirexApplication.java
new file mode 100644
index 0000000..489bcaa
--- /dev/null
+++ b/src/main/java/com/acquirex/AcquirexApplication.java
@@ -0,0 +1,20 @@
+package com.acquirex;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * 카드 매입 승인 경로 Spring Boot 3 애플리케이션
+ * 
+ * Spring Boot 3.x 마이그레이션:
+ * - Java 17+ 필수
+ * - Jakarta EE 9+ (javax.* → jakarta.*)
+ * - Spring Framework 6.x
+ */
+@SpringBootApplication
+public class AcquirexApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(AcquirexApplication.class, args);
+    }
+}
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