# Identity App Objects

The Identity Object is a special type of App Object that comes pre-defined in every app. It is important because it defines the structure of data pertaining to the [Actor](../../concepts/actors), the customer going through an Airkit App. The `actor` variable is a type of Identity, and it is crucial that the `actor` variable have access to way the Identity object is structured.

In the vast majority of use cases, no data will actually be stored under the Identity object. The presence of the Identity object is important because it structures data that is saved and accessed during the relatively short-term length of a Journey; it is not often used for long-term data storage the way most App Objects are.
