The Conceptual Design is a strategic statement of how the solution will provide value to the collection of usage scenarios. The usage scenarios describe all the participants and activities within a business environment that require a solution. The Conceptual Design addresses that need by describing one or more alternative solutions. This design statement is expressed in the context of the solution users (customer, external services, etc), and describes what the solution will do to support their activities.
Visuals make a great impact and increase readers’ understanding of the Conceptual Design. This can be accomplished using UML diagrams, Microsoft Visio diagrams, or Application and Database modeling tools, and other types of graphics.
The Conceptual Design document should be brief. The audience for this document is likely to include parties outside the development team who do not have deep technical knowledge. In that context, this document is a powerful communication tool.
Developing a Conceptual Design ensures:
1) the breadth of usage scenarios are analyzed and an overall, business-oriented solution response is developed and,
2) the team considers more than one alternative based not only on the usage scenarios but on all other business objectives and constraints that are part of the project.
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