The Book of DevOps Patterns : #3 — Single or multi-repository pattern

The Book of DevOps Patterns is a long series of patterns used by DevOps. Each story is introduced in a synthetic way by going to the essential. For more patterns, read my book DevOps Patterns DevOps (https://www.amazon.com/DevOps-Patterns-Guide-Bruno-Delb-ebook/dp/B08QSMX9LC).

When setting up a Git repository, one question you have to answer: is it better to set up a large repository gathering all the elements of the application or several specialized repositories?