This feature is available with some paid plans
Custom links (sometimes referred to as "custom branded links") include your custom domain at the beginning of the link as well as your own custom keywords in the back-half of the link.
A custom link does not start with bit.ly or end with a random string of auto-generated characters.
|Definition & Example
(Also referred to as a "custom branded link")
a custom domain with a customized back-half
|a custom domain, but no customized back-half
|Short link with a custom back-half
|Bitly's generic domain, customized back-half
|Bitly short link
|Bitly's generic domain, no customized back-half