A sync connection is For more information on sync connections, see About Syncing
The number of sync connections you need is driven by how many calendars you want to sync and in which direction(s) you want to sync them. To illustrate, here are two common configurations involving 3 calendars X, Y, and Z (these calendars may reside on 1, 2, or 3 Google/Microsoft accounts): For more information, see […]
Sync connections are “real-time” and work based on push notifications (rather than syncing at fixed intervals, like other services). This means that changes on a source calendar should automatically propagate to a destination calendar within a few minutes.