>basic looping of iterations and maintaining software and evolving designs and technical debt, somewhat larger codebases that make modules/components/classes et

>basic looping of iterations and maintaining software and evolving designs and technical debt, somewhat larger codebases that make modules/components/classes etc. more important. Can anyone recommend a good book for this? I'm getting the hang of lots of other 'TYCS' topics, but I'm mostly building little toys for myself to try out cool algorithms I see in my books/resources. But mention CI/CD, large module & class design, or other 'big software' stuff I get very intimidated.