When using Google Calendar Interop for Microsoft Exchange, what must be ensured for free/busy status lookups?

Free/busy status for a user in a Google Calendar and Microsoft Exchange interoperation scenario primarily relies on the source of the calendar data. The correct response highlights that when a user has both Google Workspace and Microsoft Exchange accounts, their free/busy information is retrieved from Exchange. This is essential for maintaining accurate scheduling and visibility of calendar availability across different platforms.

When a user in Google Workspace seeks the free/busy status of a colleague using Microsoft Exchange, the system needs to access the Exchange server to obtain the most accurate and up-to-date availability information. This interop functionality makes it possible for cross-platform users to see when others are free or busy, thus facilitating smoother collaboration and scheduling.

In contrast, other options suggest different functionalities that do not accurately represent how the interop works. For example, stating that lookups come solely from Google Workspace misrepresents the reliance on Exchange data for those users who are on that system. Similarly, keeping access limited to only Google Workspace users or requiring that the calendar service be enabled for all users does not properly address the mechanics of how free/busy lookups function in this interoperate setting.