You can refer to the following sources for more information regarding what was covered in this chapter: The Kubernetes service: https://kubernetes.io/docs/concepts/services-networking/service/ Exposing your app as a service: https://kubernetes.io/docs/tutorials/kubernetes-basics/expose/expose-intro/ Building Oauth apps: https://developer.github.com/apps/building-oauth-apps/ High-performance gRPC: https://grpc.io/ http://www.devx.com/architect/high-performance-services-with-grpc.html NATS message broker: https://nats.io/