What is the use of AEUID user id?

We have an User in our Siebel application with the User ID - AEUID (Anonymous End User ID).

We would like to know the importance of the existence of this User in the application.

Is it something generic or it is specific to our application alone.

Whenever we check for this User ID in the Sessions tab, it is always available with

OM BC as Completed : Broadcast Message (Execute) and OM BS as Completed : Web Engine Interface (Request)

It has the below Responsibilities associated:

• Web Anonymous User
• Unregistered Visitor
• Unregistered Customer

Please provide your view on this.

Regards,

Aravind