Every good team is. The Lakers are not. The Knicks are not. However, the Rockets, Warriors and even Spurs have analytics on their side. The Heat did too even when they had LeBron. Teams of the old guard thumb their noses at analytics. Analytics isn't the be all to end all, it's just a conversation starter for where to understand how things improve.
http://espn.go.com/espn/feature/story/_/id/12331388/the-great-analytics-rankings Look at the non-believers.
New York Knicks: Mike Smith (Director of Analytics and Pro Scout) Los Angeles Lakers: Yuju Lee (Director of Analytics), Aaron Danielson (Associate Director of Analytics) Even the teams most adverse to analytics publicly have people on their staff with the title of ANALYTICS in their title.
The article I was referencing is in the above post classified them as non-believers, but that was written in February. It may have been between now and then they have invested more, or they have the an analytics crew but still choose to ignore their findings.
Its not that they dont' have analytics departments. It's how they value the analytics input in their coaching and roster decisions. Also analytics department from analytics department differ a lot on how good they are. The competition is fierce and more and more resources are devoted to analytics researches. The teams who really believe in analytics like the Raptors for example , have for years now installed also cameras to analyse their practices and games and see how they can improve them. The Lakers haven't. They also use analytics in injury prevention by measuring the fatigue etc of a player and hold them out or some teams measuring micro movements to foresee problems- in cooperation with outside companies ofc. We know also some extreme things like analysis of micro expressions for drafting purposes to determine the character of players. Just because a team has an analytics department in title doesn't mean they use it properly or to the extent other teams do.
Basically most good franchises use analytics to HELP drive decisions. The truth is, ALL companies nowadays use Data analysis to drive marketing/processes/HR/product, if you aren't you're being left behind. Like I said in a different thread, getting the data is half the job. How you apply/what story you tell with the data is where you create value.
So if a "dumb" gm tries to go for Durant in fa, and Morey uses his analytics to also try to go after Durant, is Morey the better gm? Hmmm...