Robert C. Martin coined the term single responsibility principle which states “gather together those things that change for the same reason, and separate those things that change for different reasons.”
A microservices architecture takes this same approach and extends it to the loosely coupled services which can be developed, deployed, and maintained independently. Each of these services is responsible for discrete task and can communicate with other services through simple APIs to solve a larger complex business problem.
When you are just starting to develop microservices, start modestly with just one or two services, learn from them, and with time and experience add more.
