It seems like a lot of jobs are requiring this experience, which I don’t have. Is this something worth learning? Any resources for getting experience in it? I have some programming experience but I’m seeing enterprise administration in a lot of postings.
Definitely @linercapr ArcGIS Enterprise is a mainstay.
You can get started with the following learning plans. Thereafter, find opportunities to get hands-on experience with the applications.
ArcGIS Enterprise: Installation Fundamentals
ArcGIS Enterprise: Administration Essentials
Many more resources at ArcGIS Enterprise landing page