Office Communications Online provides instant messaging and presence awareness for secure real-time communications. Presence awareness shows you at a glance if someone is available to receive an instant message. Office Communications (OC) Online is part of the BPOS Suite. If you have previously purchased rights to the BPOS Suite, you can now enable OC Online for your organization’s users. To enable the service, service administrators will go to the OC Online tab in the Service Settings area of the Microsoft Online Administrator’s Console (MOAC).