In this guide, you’ll learn how to program your Arduino to query the FedEx API every time someone comes to your door in order to determine whether that person was delivering a package. Then, you’ll program the board to use the Zendesk API to alert you if a package was delivered. To connect the APIs to the hardware, we’ll use Temboo, a service that facilitates programming devices to interact with web services. The framework we’ll use in this example is flexible, however, so there’s plenty of room to create—the hardware and APIs we’ve chosen to use are by no means prescriptive.