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I hereby declare that I am the sole author of this thesis. I authorize the University of Waterloo to lend this thesis to other institutions or individuals for the purpose of scholarly research. I further authorize the University of Waterloo to reproduce this thesis by photo-copying or by other means, in total or in part, at the request of other institutions or individuals for the purpose of scholarly research. ii The University of Waterloo requires the signatures of all persons using or photo-copying this thesis. Please sign below, and give address and date. iii This thesis presents techniques for reducing the complexity of communication in distributed systems. It presents a set of simple standards and tools that provide an efficient and consistent programming interface that can be used to implement a great variety of communication interactions both within and between various types

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