IFTTT is an automation service that connects different online services together so that actions in one service can trigger actions in other connected services. It allows users to automate repetitive tasks by creating "applets" that specify a trigger from one service and the corresponding action in another service. The summary walks through how to sign up for an IFTTT account and create a sample applet that sends weather reports via text message each morning based on triggers from a weather service. It also shows how to enable pre-made applets and customize applets.