We've implemented Deployment Pipelines in our PowerBI Service; this process is the one we have right now:
I'm wondering if it's possible to add a Source Control version in PowerBI. Is there a similar process to Github, where you can commit and push your changes (just like publishing in PowerBI desktop), and then easily track the modifications made or revert back to a previous version?
There's some new stuff around development pipelines and .pbip files that's come out since that series but it's still super useful. Personally, I track TE folder structure in Git but don't use pipelines or pbi-tools yet.
The Tabular Editor folder structure is covered in the series.
Deployment pipelines didn't exist when I first started doing version control on Power BI files and I haven't had the need to set up that formal process yet. It would be nice in theory but I haven't had a strong enough reason to change my process to add the extra overhead.