About Google Calendar
The calendar of record for the whole Workspace.
Google Calendar entered limited beta on 13 April 2006 and exited beta in July 2009. It now sits inside Google Workspace (the suite renamed from G Suite on 6 October 2020) and on the free Google account, which means it covers Workspace's roughly 9 million paying businesses plus the consumer base behind 1 billion-plus Gmail accounts. For most companies it is the calendar of record: where Gmail invites land, where Meet links are generated, where Drive attachments hang, and where booking layers like Calendly write into.
The Calendar API exposes the full meeting reality: calendars and calendar lists, events with attendees and RSVP status, recurrence rules and instances, reminders, free-busy windows, and ACL rules per calendar. That surface is much wider than the agenda view your people scroll. In a warehouse next to HRIS, CRM and project data, it becomes the answer to questions a leadership team has been asking for years. How much of the workweek does a role spend in meetings. Which executive has zero focus blocks left on a typical Tuesday. Which recurring series has shrunk to three attendees but still blocks twelve calendars.