The refactoring topic is rather big but this particular post will be short on it. We will take a glimpse look over anticorruption-layer usage.

Naming is very important when it comes to architecture and design. Words express the intention, and comprehensive language helps us better understand what we have, do and want.

Short answer - it raises the code quality.

If your company is good enough to write documentation then do it properly. Poor documentation is worse than absent documentation.

For the sake of the world, please, stop mixing http-status codes with your code.