is anyone (natural or legal person: i.e., a user
) or anything that shall be characterised through the measurement of its attributes.
This definition is intentionnally open to any type of person (including legal persons), but also to any other type of entity, such as objects (e.g., computers or other forms of machinery), digital resources or processes (e.g., programmes), as this allows abstraction to the largest common element and thus offers the largest number of applications.
In order for its existence to be acknowledged, an entity needs to have at least one unique identity. Once an entity has authenticated, it is seen as a Principal.
Category Identity And Authorization Management