 | High Performance Networking Layer
 | Modest Number of Sites (From ~5 to ~50)
| ATM, IP/ATM, IP/SONET, HIPPI/SONET, Etc.
| | | Collection of Important Resources
| Supercomputers, Databases, Caves, ImmersaDesks, People
| | Middleware Layer Providing Integrated Services
| I-soft, Globus, Legion, Condor, Etc.
| | Advanced Applications Software Environments
| Digital Video, Teleimmersion, Distributed Supercomputing, Remote Data Access, Teleinstrumentation, Data Mining
| | Application Demonstrations
| Prototype Next Generation Apps Mostly From Science and Education | | | | | |