The concept of Magento 2 Company Account was first introduced in the B2B Commerce solution.
A B2B customer can request for a Company Account registration from the frontend sign-up form or via direct contact with the store admin.
Once the request is approved, the register - thereby the super-administrator or company admin can appoint sub-users to shoulder the management by creating roles and permissions for those sub-users. Then, all activities of sub-users are clearly recorded and can be managed by those who have permissions.
This process will cut down the time and cost of communication and management, and of course, improve the B2B efficiency significantly.