Transparency of information system service evolution

While service evolution is one of key problems in the process of building service-oriented architectures,the requirement of the transparency of service evolution is confirmed.For this purpose,a kind of architecture is presented,which consists of three layers: application layer,composition service layer and atomic service layer.And then the problem of service evolution is decomposed into the atomic service layer and the composition service layer.Moreover the transparency is analyzed on the two layers and the abstractive stra-tegies are given to solve the problems respectively.Finally the realization of the strategies expatiated,and an example validate the ef-fectiveness for the solution.