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S1.2: Tier Environments
Web Services must run only in a n-tier environment
- That is pronounced “ahn – tear” “ehn-virulent”
Traditional Structure of Networks & Applications
- Network: All People Seem To Need Diet Pepsi
- Application: People Admire Darwin
Location in both respects is key
- Which System defines which name
In both cases any Tier may consist of many parts
- Especially true in Application Tier
Logical Design has Defined Tiers
Physical Design has one or more server(s) per Tier
Physical vs. Logical is very important when defining Network Management capacities