Deployment Is More Complicated, but It's More Resilient

It's important to be able to deploy individually different components and version them independently of one another. Otherwise you could get into a situation, couldn't you, where you just have a distributed monolith? It is more complicated with acoupled approach, because you have to know where the dependencies are, where the arrows are pointing. And it does requires more communication, i think, just to make sure you're not breaking anything.