+.. |image0| image:: sections/architecture/images/aaf-permission-mapping.png
+ :height: 200px
+ :width: 500px
+
+A permission is composed of the following attributes:
+
+* Type: core name of the permission
+* Instance: the object that is being interacted
+* Action: What is happening with this object
+
+All roles, permissions identities of a given module in ONAP is covered by a Namespace (e.g. roles, permission and identities for the APP-C modules of ONAP)
+
+The permissions, having a 3 part definition, make AAF also like an ABAC (A=Attribute).
+Roles, Permissions are stored centrally, but segregated by Application (the proverbial Namespace). The Application Creates Permissions that match their code (for the question "Does User have Permission"). Permissions are granted to Roles, to which the User belongs. AAF is not a Policy Engine, where dynamically based Policies are validated against differing kinds of Data Stores. AAF (Application Authorization Framework) is focused on RealTime Authentication and Authorization.
+
+Namespace
+^^^^^^^^^
+A Namespace, in AAF, is the ensemble of Roles, Permissions and Identities. Namespaces are known by domain, example com.onap.dcae or com.onap.appc and they are hierarchically managed. A Namespace is assigned to an application and contains one or more roles and one or more permissions. By default, every namespace has an admin role
+
+**People in Namespaces**
+
+Tasks Owner (Responsible) must do:
+
+* Owners receive by email a notification to Approve
+* Owners also receive notifications of time based activities
+
+ * Periodic Revalidation of Users in Roles in Namespace
+ * Periodic Revalidation of Permission in Namespace to Roles
+
+Admins may:
+
+* Create/Delete/Modify Roles in Namespace
+* Add/Remove Users from Roles in Namespace
+* Create/Delete/Modify Permissions in Namespace
+* Grant/Ungrant Permissions in Namespace to any Role in the company (Cross Company Role Grants are possible, but require approvals from both sides).
+
+Only Namespace Admins may manage Roles/Permissions within a Namespace. The Granting process is One-Way. The Namespace Admins must Grant given Permissions to Roles on request.
+
+
+
+
+Object Model
+^^^^^^^^^^^^
+
+|image1|
+
+.. |image1| image:: sections/architecture/images/aaf-hl-object-model.png