Using AAM URL redirection as part of the upgrade processhttp://technet.microsoft.com/en-us/library/ee720448(office.14).aspx
Configure forms-based authentication for a claims-based Web applicationhttp://technet.microsoft.com/en-us/library/ee806890(office.14).aspx
Determine upgrade approachhttp://technet.microsoft.com/en-us/library/cc263447(office.14).aspx
Performance and capacity managementhttp://technet.microsoft.com/en-us/library/cc262971(office.14).aspx