IFTTT is a free service that allows users to automate connections between different internet-enabled devices and online services using simple "If this, then that" statements called recipes. Recipes are created by selecting a trigger channel like Instagram and action channel like Facebook. The user chooses a trigger like a new Instagram post, then programs an action for that trigger like posting the image to Facebook. Recipes run automatically in the background to connect triggers from one service to actions in another. The document provides step-by-step instructions for signing up for IFTTT and creating a basic recipe to cross-post new Instagram photos to Facebook.