You might have noticed, when you click link on a webpage, the corresponding application will get opened. This is achieved through URI scheme. Mobile app and desktop applications can be launched through Custom URI Scheme will help you to achieve this for your app. Examples, Zoom Meeting Link, Microsoft Teams Meeting link, FaceTime, FAX, Telephone/mobile phone number auto dial etc.
URI Scheme Examples
Zoom Meeting Links
URI Scheme : zoommtg & zoomus are used by Zoom
Example: Windows/Mac client:
zoommtg://zoom.us/join?confno=123456789&pwd=xxxx&zc=0&browser=chrome&uname=Betty
iOS/Android Client:
zoomus://zoom.us/join?confno=123456789&pwd=xxxx&zc=0&browser=chrome&uname=Betty
Ref:
https://medium.com/zoom-developer-blog/zoom-url-schemes-748b95fd9205
Microsoft Teams Meeting Links
FaceTime
facetime://<address>|<MSISDN>|<mobile number>