Here's a paragraph from the MLB.com story:
Garko joins the Tigers organization after spending the previous two seasons on the Major League coaching staff of the Los Angeles Angels, serving as a Coaching Assistant/Instant Replay Coordinator. While with the Angels, Garko focused on the integration of analytics in the clubhouse and dugout, and offensive game planning. Prior to his time with the Angels, Garko was the head coach at the University of the Pacific from 2018-19, where he saw six of his players sign professional contracts during his tenure. He also has experience managing in professional baseball, leading Double A Tulsa for parts of the 2016 and 2017 season. Garko began his coaching career in 2013 as an assistant coach at his alma mater, Stanford University.
I like his background in implementing analytics, and Stanford is a nice bonus.
It also seems to be a departure from Tiger hiring practice to get guys who have long-time experience in the discipline they are hiring for, since Garko doesn't seem to have any executive or managerial experience in player development at the pro level at all. He did have a great deal of success at the college level though—same as Chris Fetter.
I'm not at all unhappy with the hire, and am in fact intrigued. This is quickly becoming the 180 Degree Tigers.