EEM Cisco Embedded Event Manager
Embedded Event Manager (EEM) is a technology on Cisco Routers that lets you run scripts or commands when a certain event takes place. As Cisco states it:
Cisco IOS Embedded Event Manager (EEM) is a powerful and flexible subsystem that provides real-time network event detection and onboard automation.
Links
https://networklessons.com/cisco/ccie-enterprise-infrastructure/cisco-ios-embedded-event-manager/
https://www.cisco.com/c/en/us/products/ios-nx-os-software/ios-embedded-event-manager-eem/index.html