By default, the AWS app does not login users when accessing a customer portal via the direct URL (e.g. <your instance>/servicedesk/customer/portal/1).

However, this can be easily set up.

1. Go to the AWS configuration and scroll down to the Advanced Settings.
   
   

2. Next, we need to add a new entry for Inject Authentication URLs. Click Add Url.
   
   
   
   To inject the authentication for all service desks, add 

   /servicedesk.*

   CODE
3. Save the configuration.

Instead of injecting the authentication for all service desks, you can also do this more precisely. See the following example

/servicedesk/customer/portal/1

This will only log in users when accessing the service desk with id 1. By exchanging "1" with a different id, you can control this.