This project was motivated by our direct experience in providing cyberinfrastructure to a number of observing systems domains and communities. All of them face similar challenges in deploying and managing a distributed collection of heterogeneous sensors and instruments. Few of them have the resources to buy and customize a commercial solution. None of them can wait for a new open-source streaming data middleware system to be built from scratch. These domains and communities are briefly introduced below.

1. CREON:  The Coral Reef Environmental Observatory Network (CREON)
2. CUAHSI: The Consortium of Universities for the Advancement of Hydrologic Science (CUAHSI)
3. GLEON: The Global Lake Ecological Observatory Network (GLEON)
4. Health Monitoring of Highway Bridges and Civil Infrastructure (Terabridge)
5. PRAGMA: The Pacific Rim Applications and Grid Middleware Assembly (PRAGMA)
6. MoveBank: Integrated database for networked organism tracking (MoveBank)
7. NEES: The Network for Earthquake Engineering Simulation (NEES)