<div>Interaction constitute a separate dimension of computing, orthogonal to (sequential) algorithmic computation: managing interaction is something more than simply I/O handling. Coordination is an emerging area of language, models, and systems meant to effectively manage the intrinsics complexity of interactive software architectures.</div>

<div>Coordination models and languages are meant to provide the abstractions and metaphors needed for the design of multi-component software systems (like multi-agent architectures). An outline of the most prominent coordination models and languages in literature will be actually given and a comparison will be tried, focussing in particular on their impact on the design of complex software architectures.</div>