For your first question about good devex, there are definitely some objective ways to measure it. * The time it takes for completed code to be deployed to prod

For your first question about good devex, there are definitely some objective ways to measure it. * The time it takes for completed code to be deployed to production * count of manual interventions it takes to get the code deployed * count of other people that have to get involved for a given deploy * how long it takes a new employee to set up their dev environment, count of manual steps involved Stuff like that