I've been tasked with making our organization's dev documentation look a bit nicer.
Currently we have markdown files in our github repositories and the idea is to get them all pushed to an external custom domain that looks a little nicer.
I'm only just starting to get my head around SSGs. I gather github has something called Github Pages which looks to do what I want, but if this exists then why do people use other things like Netlify, Docusaurus, Jekyll, Hugo etc?
What advantages do they have over Github Pages?
One other question - my boss is quite an open source zealot and very much against getting 'locked in' to things - is it easy enough to migrate away from Github Pages if required later on?