Suppose you are working with softwareA which depends on libraryA, instead of copy-pasting the libraryA over and over again when a new version of the library is released what we can do is use submodule to make this process DRY and elegant.

Earlier on, I was decided on to giving my website a go backend, but I later thought it was an overkill to use golang as a backend for a personal website and I should keep that enthusiasm for a real app. But for now, I'll use a static site generator called Hugo for blogging.