In this post, Sandrino Di Mattia explains how to make
WCF RIA Services work in a Multitier architecture using
IIS Application Request Routing.
Source: Sandrino Di Mattia's Blog
In large companies / governments / ... most of the time the application architecture needs to follow a set of rules (focused on maintainability and security).
These could be rules like the following:
- The applications need to be developed following a Multitier architecture
- Each tier should be physically separated for security.
- The business logic tier is the only one that can connect to the data tier.
- The presentation tier only connects to the business logic tier.
- The presentation tier may not directly connect to the data tier.
- The presentation tier is located in a DMZ, other tiers are heavily secured.
- ...
Each project / company will have its own rules but the concept stays the same.