Hello, Sunayana N.!
An incident rule in AppMon is a mapping between threshold violations of measures and the actions taken. Incident rules can be based on multiple measures and different severity levels of threshold violations to trigger notifications.
Please review this documentation for more information about Incidents, how to set them up, and how to create visual charts for them:
Excellent answer. Additionally you can check out my youtube tutorial on "SLA Monitoring". There I explain how Incidents and Alerts work as well: https://www.youtube.com/watch?v=Ysh_HL8HDoA&t=735s&list=PLqt2rd0eew1bmDn54E2_M2uvbhm_WxY_6&index=11