Which tier am I?
The test is what the work is for, not how much you use.
| Personal projects, hobby, learning, teaching, open source | Community (free) |
| Anything you do for an employer, a client or a business, of any size | Pro |
| An organization that needs more than 25 Pro seats, or needs organization-level controls | Enterprise |
The test is what the work is for, not how much you use. If you would be paid, or your employer or a client benefits, it is work and needs Pro, even if you only have two servers. A lone DBA at a large company needs Pro; Enterprise is there when the organization needs what Enterprise adds, and is required beyond 25 seats.