Abstract: A method and system for reactively assigning computational threads of control between processors provide a coordination model implemented by a software framework. The coordination model comprises five (5) entities which implement the three elements of a coordination model: 1) Behavior, 2) Data, 3) Container, 4) Source and 5) Processor. The invention decomposes an application into a cooperative collection of distributed and networked Behaviors, which are subsequently executed by Containers. A designer using this invention implements a Behavior for each logical stage of execution, which represents the core service-processing logic for that stage.