What is an ICS file format?

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If you don't know about ICS files, then read this post to find out what is an ICS file in simple terms. The file format for iCalendar, a standardized method of exchanging calendar data online, is called an ICS file. It lets you email or use calendar software to forward tasks, meeting requests, and other calendar events to other individuals. Programs such as Microsoft Outlook, Mozilla Thunderbird, Apple Calendar, Yahoo! Calendar, Google Calendar, and others can access the ICS file.