What is the definition of an ICS file format?

If you're curious about the meaning of the ICS file format, you may read this post to learn more about what is ICS file format. The ICS file format is used to keep iCalendar files. It may be recognized by the .ics file extension. This file format allows you to import, export, publish, approve, and share calendar items with other users. The iCalendar standard is used by a number of online Internet calendaring and scheduling applications, including:

1. Yahoo! Calendar
2. Google Calendar
3. Apple Calendar
4. Microsoft Outlook
5. Mozilla Thunderbird

Read here for more info: https://softfind.net/ics-file/