Translations:F.A.Q. - Frequently Asked Questions/43/en

You usually need to know someones full handle (@profile@server.name) or their profile's URL. Both can then be used to find them with the search function of the service, where you are logged in.
Whether you want to find an account on a different Mastodon server or an account on a different Fediverse service, you always need the same information for your search.