The difference is in the network boundaries. I write most of my code as microservices, but it would be incredibly easy to wrap it all up into a single binary.

The difference is in the network boundaries. I write most of my code as microservices, but it would be incredibly easy to wrap it all up into a single binary. It's not uncommon for go code to have one binary for separate microservice functions (see OKLog). This way you can change between a microservice, or a monolith (ish) with a CLI flag.