The magic behind trying to keep outlook and google calendar in sync automatically relies on a legendary standard known as ICS (iCalendar).
How ICS Feeds Protect Privacy
When you attempt to sync work outlook calendar to personal google calendar, your IT department might block direct API authentications. The beauty of ICS publish links is that they generate a read-only tokenization of your schedule.
Handling Office 365
During an office 365 calendar sync with google calendar setup, the server produces a highly randomized URL hash. Calsyncx parses these multi-layered VCALENDAR text structures, decrypting VEVENT objects and translating them to the native Google Calendar API.
Because no enterprise passwords exchange hands, you retain 100% control over the link!