IFTTT, which stands for "If This Then That," is a web-based service that allows users to create simple conditional statements, known as applets. These applets connect different applications and devices, enabling them to work together seamlessly. For example, you can set an applet to automatically save any photo you post on Instagram to your Dropbox account. Users can choose from a variety of services and platforms, including social media, smart home devices, and productivity tools. By automating tasks, IFTTT helps streamline daily activities, making it easier to manage multiple applications without manual intervention.