Adafruit hosts a cloud service, io.adafruit.com, where you can upload data from your devices and also subscribe to data from other devices. The service is currently in beta, but you can sign up for a free account to test it. The data is stored in “feeds” and you can configure your own dashboards for viewing the data. There are two API:s available. One is REST-based and the other follows the publish/subscribe pattern of MQTT. In this post I will try both alternatives.