AIA started out being a mechanism for application-to-application (A2A) integration. With the release of AIA 2.5 the the AIA Foundation Pack now has 80 EBO's and over a 1000 pre-built services. With over 30 PIP's AIA has matured to being a cross-industry integration platform by providing pre-built process flows for common cross-industry processes such as Order to Cash (O2C) and Procure to Pay (P2P). NOTE: All of these pre-built processes are based on specific application end-points. However these process flows which are embedded within the existing framkwork and can be (relatively) easily extended to include different application endpoints.
I anticipate future release of AIA would focus on specific industries and provide process flows for business processes specific to an industry domain. This would align well with the gradual release of Fusion Applications.
With the initial release of AIA in April-2007 to the release of AIA 2.5 in Oct 2009, AIA has matured from a great concept with a lose set of code artifacts, to a robust product with a compelling value proposition as an integration platform. Quite a journey in 2.5 years.