The company you sell to. The persona is the person inside it.
An ideal customer profile (ICP) describes the account: industry, size, stack, trigger, and the economics that make them worth the motion. It is not a mood board of a fake human. That is a buyer persona. You need both.
ICP = which companies. Persona = which roles and jobs inside those companies. Outbound that skips the ICP wastes sequences on accounts that cannot buy.
One you can sell this quarter. A second ICP is a second motion, not a comma.