With my team we are in a research phase where we are looking for the right cloud solution for our project. About the project: - pretty big - we are already decided that we are going with a microservice architecture - web application What we are looking for: - we would prefer a Severless solution to be able to concentrate on the application logic and on delivering early, but if it is not suited for us then eventually we will consider other options too - we would like to apply the edge server pattern. To have a dedicated microservice to handle and forward the incoming request to the other (backend) microservices. Where are we so far: We are pretty new to GCP and so to the app engine world but we are already experimenting with it for a week now, and we are satisfied with most of the things, like for example the built-in Load Balancing and scaling mechanism. But what we couldn't accomplish so far is hiding our "backend" microservices from the world, they remain always accessible using the provided subdomains (service-id.project-id.appspot.com). As mentioned we would like if these backend microservices were not accessible to the public internet but only to our dedicated edge server microservice. We've already tried some options as the Cloud Endpoints which are very elegant but they are solving the problem only partially because the backend microservices are still remaining public only with an extra auth layer on them. So my question is, is it possible to hide the backend microservices from the public web with the app engine solution? Thank you, Tamas -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to firstname.lastname@example.org. Visit this group at https://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/1015f7e9-acdc-4149-a627-a347f7d07879%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.