Chapter 3. An architectural model for coexistent applications 99
Figure 3-6 An example using a concentric layered model it illustrate more complex relationships.
Like the flat layered model, this concentric layered model is a logical model. No
middleware is represented on the model. It illustrates relationships and
separations of concerns. Neither concrete solution or concrete deployment
schemes are implied.
3.1.3 Bridging layers and address spaces
If we extend Figure3-4 on page 97 to include some common implementation
technologies to both the WebSphere application layers and the .NET application
layers, we get the situation illustrated in Fi ...
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