Event
Data representing an action taken by an actor (for example, a user or sensor). An event can be a web conversion, an online purchase, a click on a web page, a step tracked on a wearable device, playing a song, a sensor reading, swipes on a mobile app, level up in a game, or an email click. Each event is described by a row of event data. Each event can have many different attributes (or properties), but always has a timestamp and an actor.