Our Community Edition license is feature equivalent to our Enterprise Edition, but only includes standard developer support.
Community Edition allows hosting IdentityServer on your own infrastructure (including your cloud). It is not for scenarios where you redistribute IdentityServer, or build software for third parties. In this case you either need a redistribution license, or the end-customer needs a standard license.
You qualify for the Community Edition if you're a for-profit company/individual with less than 1M USD projected annual gross revenue, and with access to less than 3M USD in capital facilities; or if you're a non-profit organization or registered charity with a published annual budget less than 1M USD.