Technology is about automating stuff for us humans and make our lives easier. IFTTT follows the same principle. Once installed on your Android device, you can use it to create "conditional statements" called applets to perform some tasks for you. For example, after I publish this post, IFTTT will kick in and post a tweet on my behalf so I do not have to manually do it. I can ask it to do the same to other social networks too. IFTTT lets you also control devices like Amazon Alexa or Google Assistant; change your home thermostat when you arrive. There are plenty of possibilities.
IFTTT was updated today and makes applets that use Android services work better. The company made some changes to make the applets more stable. They also made some "minor improvements to the graphic design of Applets". The app is now 1MB smaller, thus using less space on your device.
IFTTT means If This Then That and is free in Google Play Store.