Working on a major new release gives us the opportunity to revisit some of the public contracts and improve them. We quickly felt that the endpoint infrastructure was one of them: currently, the web endpoints in the Actuator are only supported with Spring MVC (no JAX-RS support). Also, creating a new endpoint that exposes several operations requires writing quite a lot of boiler plate: you need to write a main endpoint, the Spring MVC extension (as a @RestController ), a JMX MBean and the necessary auto-configuration. As of Spring Boot 2 support for a "reactive" actuator became an obvious requirement that also brings several new challenges.