Microservices

A species would be a combination of roles [DCI?], instead of being characterized as an animal, which would not necessarily be the best description. At a larger scale, microservices are a very similar case [of composition instead of inheritance / ISP], they are pieces of a system separated by responsibilities, instead of being a great monolith.

https://hackernoon.com/solid-principles-made-easy-67b1246bcdf

Procedural vs OO

In any complex system there are going to be times when we want to add new data types rather than new functions. For these cases objects and OO are most appropriate. On the other hand, there will also be times when we’ll want to add new functions as opposed to data types. In that case procedural code and data structures will be more appropriate.

https://medium.com/mindorks/how-to-write-clean-code-lessons-learnt-from-the-clean-code-robert-c-martin-9ffc7aef870c