On a fresh site, you have 30 days unlimited (basically same as when you install the CFE at the moment). If you haven’t entered license information, after the 30 days, you are restricted to 750 services (basically same as with CFE at the moment) and 1 site. Thus, if you want to remain in the free tier, you don’t have to enter any license information.
When you enter valid license information, you basically unlock the services and site limitation.
@Dirk Exactly as you say (except the Raw Edition which is of course also for free)
We haven’t changed our commitment to the Checkmk Raw Edition and we don’t plan to change in the foreseeable future.
EDIT: We are preparing a FAQ regarding the licensing / Free Edition etc., which we will share in a blog post or knowledge base article. Your questions are helpful to complete that FAQ. Thx!