Showing upcoming meetings is a common scenario when integrating Microsoft 365 in work applications. It shows you how to get information from the user's calendar and check their availability for a particular time slot. And it's also a great way to get started with building apps on Microsoft 365.
This is just one of many scenarios and types of apps that you can implement on Microsoft 365. For more information about the type of data and insights stored on Microsoft 365 that you can tap into, check out the Microsoft Graph API documentation.
Give it a try, and we're looking forward to hearing what you think.