1 | Back-End services |
2 | comprise Tier 3. |
3 | Distributed, object-based, |
4 | scalable, and reusable |
5 | Web server, Object broker |
6 | and Resource Manager |
7 | Middleware forms Tier 2 |
8 | Tier 1 is a high-level, browser-based Front End |
9 | for visual programming (including selection of applications, |
10 | generation of input data sets, specification of resources, |
11 | post-processing and visualizations) |