We posted our patterns & practices Reference Application Architecture Cheat Sheet on CodePlex. It’s an overview of a layered architecture, including an brief explanation of each layer and the relevant components.
Layered Architecture at a Glance
Here’s a figure that shows the layers and components:
Here’s a brief summary of the layers:
- Presentation Layer - Presentation layer components implement the functionality required to allow users to interact with the application.
- Business Layer - Business layer components implement the core functionality of the system, and encapsulate the relevant business logic.
- Data Layer - Data layer components provide access to data that is hosted within the boundaries of the system, and data exposed by other back-end systems.
- Services Layer - Services layer components provide other clients and applications with a way to access business logic in the application, and make use of the functionality of the application by passing messages to and from it over a communication channel.
Here’s a listing of the key components for each layer:
Presentation Layer Components
- User Interface (UI) components
- UI process components
Business Layer Components
- Application facade
- Business components
- Business workflows
- Business entity components
Data Layer Components
- Data access components
- Data helper and utility components
- Service agents
Services Layer Components
- Service Interfaces
- Message Contracts
You can read more about the components in our Cheat Sheet – Reference Application Architecture.
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