There are several options you can use to implement and optimize authentication between your SharePoint installation and Presto Presto Servers. This allows you to set up an appropriate level of security and user experience when your environment has bi-directional authentication between SharePoint and one or more Presto Servers.

The challenge for user authentication with Presto Add-On for SharePoint (P4S) 2007 is that users, who are already authenticated in SharePoint, must also authenticate with one or more Presto Servers as seamlessly as possible. For the best user experience, a user should only be required to login to a system once and gain authorization to remote systems using their current identity.

To define the appropriate plan for authentication, you must consider the various User Experiences for P4S 2007 and Authentication Designs for P4S 2007 based on your SharePoint environment.