IFTTT stands for "if this then that". The name here stands for exactly how the American service works. It links a trigger with an action. For example, the lighting can be linked to the location of the smartphone. The function would then be: "When I leave the house in the morning (if this) , turn off the light (than that)". For this you need the IFTTT app and a lamp that supports the IFTTT standard. Unlike the other smart home solutions, IFTTT is not voice-controlled. The triggers and actions are configured on the website or in the app. However, you can still trigger appropriately configured actions via voice command using Google Assistant or Amazon Alexa, as IFTTT is compatible with both ecosystems.
The advantage of IFTTT is that you are not limited by the pre-programmed functions of the service. You can configure completely independent functions for yourself with IFTTT and the compatible devices. However, since the focus of the service is North America, some services and features are not available in our country.