Agree with all of this, especially: > have a good integration/e2e testing set up early - mock tests ended up being very brittle for us. Unfortunately microser

Agree with all of this, especially: > have a good integration/e2e testing set up early - mock tests ended up being very brittle for us. Unfortunately microservices also can make good integration testing difficult when it comes to testing full e2e functionality. The results of testing e2e, by nature, rely on the sum of the services interacting with each other properly, thus creating testing dependencies between services that negate some of the advantages of having separated them in the first place.