AWS Lambda custom runtime.
$ ./build.sh
$ ./mvnw package -P native
builds a native-zip ZIP file in target. Upload it to AWS and set the handler to "foobar".
To test locally, run the TestServer and then the DemoApplication (either in a JVM or natively). Then POST some data into the test server:
$ curl localhost:8000/add -d world -H "Content-Type: text/plain"
There is a unit test that does the same thing. Also the build.sh script orchestrates the same test for the native image.