[acveilleux]

The independence of microservice is not always achieved. You often end up with a mess of interrelated services depending on fairly narrow version ranges to retain compatibility. The more homogeneous your production environment is, the less that's a problem. The worst case is when you have a dozen (or hundreds...) of production clusters that are all independent and not necessarily in-synch as far as deployed version goes.

[jeffdavis]

Absolutely.

Developers often gloss over how truly difficult it is to make good API choices. And when the wrong choices are made, it goes wrong quickly.

Microservices probably amplify this effect, but it's hard to say.