In App Platform, a service is a type of component that is both internet accessible, and running server-side code written in a supported programming language, such as Python, Ruby, Go, Node.js, or PHP. Because services are internet-accessible, they need to be configured with HTTP port and HTTP route values, so that the load-balancer can distribute traffic properly.

Other than being internet accessible, a service has the same properties as a worker, which can not accept HTTP requests and is for doing background tasks.

Create and configure services in App Platform