for those who listen to lenny's podcast or follow him (a huge voice in product at large), he recently did a podcast with nicole forsgren who was a co-author on the devX bible called accelerate, co-author on the DORA framework and now also the SPACE framework
it was a great listen, especially as a nice refresher on what to measure and why when it comes to improving eng velocity, productivity, and satisfaction
https://www.lennysnewsletter.com/p/how-to-measure-and-improve-developer#details