This is a great example demonstrating how Access Policy Manager (APM) can be integrated directly with LTM, to bring user identity into load balancing and other traffic management functions.
This particular example is using the custom "session.logon.last.appname" APM session variable to dynamically select the LTM pool (within the ACCESS_ACL_ALLOWED event), but you could use anything from a user's AD group to their Exchange mailbox location to their geoip location APM session data.
Nice job Stephanie and Jason putting this together.