A Fediverse ID is an identifier that conceptually is usually used to point to a person, but also can be conceptually used to point to an application, a group, a organization, a service, or any other type of entity.
Here are some sample Fediverse IDs:
A Fediverse ID looks similar to an e-mail address.
The main superficial difference being that a Fediverse ID starts with an at sign (“@”) (Unicode character U+0040), but an e-mail address does not.
Fediverse IDs appear in posts on the Fediverse, and are typed (something with the help of some form of autocomplete) by users.
Part of the process of resolving a Fediverse ID transfomrs a Fediverse ID into an
Here is an example:
at sign ↓ @joeblow@example.com ← Fediverse ID acct:joeblow@example.com ← acct URI ↑ no at sign