I think using a framework can help with the maintenance of the software. Let me use the one that is usually used as a negative example in hacker circles: Sprin

I think using a framework can help with the maintenance of the software. Let me use the one that is usually used as a negative example in hacker circles: Spring. Spring has a steep learning curve. Spring feels like too much magic. Spring makes simple things look complicated and hard to understand. Spring is large. On the other hand: I don't care about making extremely simple things more complicated. In the enterprise world / large-scale SaaS development, we don't do extremely simple things. If we wanted to have a service that adds to two integers and returns the result, then it must have unit testing, integration testing, end-to-end testing lifecycle management, documentation, health checks, clusterability. Why? Because we want to make our own lives easier by having ground rules for services and code, and anyone who starts maintaining, improving or operating a service knows that they can expect the stuff mentioned earlier. So Spring gives us these out of the box. People learn it once, and then whenever they start to work on something new, they get Prometheus metrics, testability, proper logging, etc. right off the bat. I find Spring (and other frameworks) annoying and boring as a hacker, and I find them very useful as a CTO when a large team is working on system and people come and go over years or decades.