[PeterWhittaker]

This article is an excellent “how to” recipe for going about this sort of refactoring, from the importance of training and of getting the backend folks on side, to clever use of attrition (no more jquery in new, then start removing it from old), and identifying sites that still needed it and accommodating them.

Seems like a well managed project.

(Yes, yes, this could be a very glossed over account that ignores frictions and factions along the way, but I quite enjoy taking it at face value.)