Vernon Vaughn

This toolbox, actually a set of patterns, was first codified by Eric Evans in the book Domain-Driven Design: Tackling Complexity in the Heart of Software [DDD] .

DDD is a set of tools that assist you in designing and implementing software that delivers high value, both strategically and tactically.

• Software development is considered a cost center rather than a profit center. Generally this is because the business views computers and software as necessary nuisances rather than sources of strategic advantage.

• Developers don’t give proper emphasis to naming objects and operations according to the business purpose that they fill.

• There are wrong abstractions, where developers attempt to address all current and imagined future needs by overly generalizing solutions rather than addressing actual concrete business needs.

That’s because design still flows from the brains of the individual developers through their fingertips as they wrangle with the code, without any input from others, including the business.

If you are afraid that producing software with thoughtful design is expensive, think of how much more expensive it’s going to be to live with or even fix a bad design.

Effective design meets the needs of the business organization to the extent that it can distinguish itself from its competition by means of software. Effective design forces the organization to understand what it must excel at and is used to guide the creation of the correct software model.

Design is how it works.

It highlights what is strategically important to your business, how to divide up the work by importance, and how to best integrate as needed.