Without SHAREid, Acme must manage the credentials, profiles, and logins of each Beta employee that accesses Acme's applications. If a Beta employee quits or is fired and Acme isn't told, that ex-employee will continue to have access to Acme's applications. In contrast, with SHAREid, Beta's ex-users are automatically locked out of Acme's systems as soon as these users leave Beta Corp.