Refactor "aws" module

aws/src/main/java/com/baeldung/lambda/LambdaMethodHandler.java

@@ -0,0 +1,10 @@
+package com.baeldung.lambda;
+
+import com.amazonaws.services.lambda.runtime.Context;
+
+public class LambdaMethodHandler {
+    public String handleRequest(String input, Context context) {
+        context.getLogger().log("Input: " + input);
+        return "Hello World - " + input;
+    }
+}