[jasonwocky]

> FWIW, I've found that building a robust and deep "API Gateway" is the key to making SOA/Microservices work. Otherwise, you end up with duplication and latency.

The risk here is that the API gateway gets too big, and its gravity starts attracting more and more functionality, until you have a brand new monolithic application.

I like the gateway approach, but generally I want to have multiple gateways, each serving as a "Microservice Facade" for a particular application or small set of applications. New applications get new Facades.

There ends up being some duplication across the facades, but basically I think "so be it". As long as the core services are factored out and own their business logic, I don't mind if the consuming applications have some duplication.