[bcoughlan]

I quite like the idea of viewing run cost as architecture fitness function https://www.thoughtworks.com/radar/techniques/run-cost-as-ar....

If your architecture has a high cost to develop, test and run when a cheaper architecture meets your needs, it's a sign that you have overengineered. In my experience there is an order-of-magnitude increase in complexity by adopting microservices that only starts to pay off when your org and user base are huge.