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A Survey of Software Component Models Kung-Kiu Lau and Zheng Wang School of Computer Science, The University of Manchester Manchester M13 9PL, UK {kung-kiu,zw}@cs.man.ac.uk Abstract: In Software Engineering, Component-based Development (CBD) is an important emerging topic, promising long sought after benefits like increased reuse and reduced time-to-market (and hence software production cost). However, there are at present many obstacles to overcome before CBD can succeed. For one thing, CBD success is predicated on a standardised market place for software components, which does not yet exist. In fact currently CBD even lacks a universally accepted terminology. Existing component models adopt different component definitions and composition operators. Therefore much research remains to be done. We believe that the starting point for this endeavour should be a thorough study of current component models, identifying their key characteristics and comparing their strengths and weaknesses. A desirable side-effect would be clarifying and unifying the CBD terminology. In this report, we present a clear and concise exposition of all the current major software component models, including a taxonomy. The purpose is to distill and present knowledge of current software component models, as well as to present an analysis of their properties with respect to commonly accepted criteria for CBD. The taxonomy also provides a starting point for a unified terminology.