But you know that can still happen to you, right? Even if you’re careful?
The sales team promised a massive contract; the system design has to be able to hit x TPS to make it; we need to pull out the stops and build to scale for that and to allow for all this future expandability.
Six months later, that sales director has left, the product has pivoted, and you’re ‘over engineered’.
The problem has always been about people deciding that different parts of the app that differ mostly in terms of business logic somehow need to be independently deployable. It's like deciding that instead of having a single database cluster and having multiple databases and tables, you need a separate, independently scalable cluster for each database table, because of some bogus reasons like some tables are queries more than others and different teams work on different tables and we can't let people join tables because it breaks boundaries or something.
No, I'd stop and see if I can help.
Microservice advocates championed this fallacy, implemented it... but now, when it's time for critical retrospective - it's not their failure.