IFTTT (if this then that) is a commercial web-based systems that allows end-users to configure rules to fire when certain events happen and conditions are met. For example, you could configure a rule to send you a message when a particular social media chennel mentions a key term.
Used in Chap. 16: pages 255, 259
Also known as if this then that
Links:
ifttt.com: IFTTT website