We welcome you to Coordination '99, the third in a series of conferences d- icated to an important perspective on the development of complex software systems. That perspective is shared by a growing community of researchers - terested in models, languages, and implementation techniques for coordination. The last decade has seen the emergence of a class of models and languages variously termed "coordination languages," "con?guration languages," "arc- tectural description languages," and "agent-oriented programming languages." Theseformalismsprovideacleanseparationbetweenindividualsoftwarecom-...