Difference between AWS ami CE and ultimate?

Hi guys, I am new to GitLab aws ami installation, so didn’t know about the limitation in aws ami CE and ultimate, can you guys explain about the difference between gitlab ce and ultimate.

Ultimate is a subscription level, with Premium being the first level. But I expect what you really mean to compare is Gitlab-CE versus Gitlab-EE. Without a license, Gitlab-EE is no different to Gitlab-CE. It’s the same functionality.