Authentication
Authentication is the process that verifies the user's identity.
Authorization
Authorization is the process that defines the features available to the user.
Validity Period
Defines the period the user is allowed to use the app. Applicable only to the Sign in authentication type. Otherwise it is unlimited.
Version X
Defines the major release of the app. The user is entitled to all minor releases (X.Y) without charge.
For any newer major release, upgrade is required at a special price.