The takeaway is about trade-offs. They made a rational decision to improve fault isolation by dividing the app into smaller building blocks managed separately.

The takeaway is about trade-offs. They made a rational decision to improve fault isolation by dividing the app into smaller building blocks managed separately. After working with it for a while, they realized the higher operational overhead made the architecture a bad choice for them. So they went back to a monolith architecture and tried to do fault isolation within the boundaries of that architecture, which might have made fault isolation not as good as in the micro-services architecture but it was acceptable. It's incredibly tough to know the full effect of a trade-off on your organization until you start going down that path. We're early in the process of adopting a micro-service architecture. With only a handful of services so far, I can already see how a team of two is going to spend a lot more time with operational issues and debugging.