摘要：Three stages of resource integration can be distinguished in evolution of IT: the stage of creation and implementation of middleware technologies and means (1990-2000), the stage of modeling and creation of enterprise application integration solutions (1995-2005) and the stage of enterprise service bus (ESB) development and technologies creation (2004-…). ESB concept was born after the need for business integration emerged, especially under the influence of SME’s needs to have sufficient system functionality for affordable price. Problems of creation and performance issues of one of ESB variants – SME application bus infrastructure for interoperability of business subjects are discussed in this paper. Colored Petri Net model for performance evaluation of such infrastructure is presented.
