Section: Application Domains

Enterprise Information Systems

Large IT infrastructures typically evolve by adding new third-party or internally-developed components, but also frequently by integrating already existing information systems. Integration frequently requires the addition of glue code that mediates between different software components and infrastructures but may also consist in more invasive modifications to implementations, in particular to implement crosscutting functionalities. In more abstract terms, enterprise information systems are subject to structuring problems involving horizontal composition (composition of top-level functionalities) as well as vertical composition (reuse and sharing of implementations among several top-level functionalities). Moreover, information systems have to be more and more dynamic.

This year, we have shown, in particular, how to use invasive patterns to reconcile requirements for black-box and gray-box composition for the evolution of grid-based information systems, see Sec.  6.1 and  5.1 .