Uber and Spotify have linked their services so that customers can connect their Spotify account to their Uber app, and then when taking a ride in an Uber you can use the Uber App to play music through the car’s speakers via your Spotify account. This is two Apps talking to one another, and then talking to a car! There could hardly be a better example of the Internet of Things. It improves the customer experience and helps retain customers by getting them locked into their product ecosystem.