Some infrastructure decisions need to be made by app developers. For example, anybody with hard security environments (finance, healthcare, defence) needs to m

Some infrastructure decisions need to be made by app developers. For example, anybody with hard security environments (finance, healthcare, defence) needs to make sure that some services aren’t available on the public internet but are capable of communicating with internal services. This kind of networking requirement is essentially tied to the application layer - only application development organisations can know whether e.g the service to check why a user is banned should be on the public internet. Such a decision could be expressed by app developers using infrastructure as code, UI toggles or physical buttons in a DC - but it has to be their decision. Similar logic applies to DNS, data isolation, backup policies, caching strategies and much more.