The health check reports whether the responding Workflow Manager Server machine is able to receive and process requests. For example, during server site creation, the health check URL reports that the site is unavailable because it can't take requests at that time.
This endpoint is useful if you're setting up a third-party load balancer or other monitoring software that supports a health check function.
A healthy (available) site will return an HTTP 200 response code along with a message indicating "success".
An unhealthy (unavailable) site will return messaging other than HTTP 200.