In the early stages of product development, monoliths are the best suited to delivering features to users as quickly and simply as possible. This is appropriate, as at this point in a products development you do not have luxury problems of having to scale your teams, code bases or ability to serve customer traffic. Following good design practices, you separate your applications concerns into easy-to-read, modular code patterns. Doing so allows engineers to work on different sections of the code autonomously and limits the possibility of having to untangle complicated merge conflicts when it comes time to merge your branch into the master and deploy your code.
Microservices require you to go a step further ...
