Generic Security Services Application Programming Interface(A generic API for performing client-server authentication that can be implemented over any authentication system. GSS-API makes it possible for applications to use the same API with different authentication mechanisms)
Virus Scanning API(A virus-scanning API that is used by third-party antivirus service providers to protect computers that have the Exchange Server 2007 Mailbox server role installed)
cache-aside programming pattern(A programming pattern in which if the data is not present in the cache, the application, not the distributed cache system, must reload data into the cache from the original data source)