Vocabulary and Behavior Driven Development

The normal requirements process for a company is for the business or product folks to create a requirements document (BRD, PRD, etc) and then that is translated via business analysts and user experience into Use Cases, Wireframes, or some other mechanism that can be handed off to the developers. The engineering team then divides those tasks up, estimates them, QA resources are marshalled to match it, and bang off they go.

One of the issues with this process is the translation from the business requirements, to the engineering implementation. Expectations by the business don't always match the implementation presented by the engineers. Part of the reason is that the language used by the business and product developers is different to the language of the engineers. Agile tries to mitigate this confusion by having a business member in the daily scrum do developers can get immediate feedback.

Behavior Driven Development tries to solve this problem by making the business, product, engineering and quality assurance all speak the same 'testable' language.

BDD relies on the use of a very specific (and small) vocabulary to minimise miscommunication and to ensure that everyone - the business, developers, testers, analysts and managers - are not only on the same page but using the same words.

This is actually quite a big buy in. Changing the vocabulary and specification process of a company, company wide as this suggests, takes a large change in how things are done. The BDD folks argue that this is not a new process just a different way of doing the same thing, nothing has really changed.

Talking as an Australian who had his cultural baggage kicked from under when moving to the US before I realized cultures were largely different mechanisms to do the same things, cultural changes like the vocabulary of specifications are a large shift.

That being said, it would be wonderful if the language of all the business units that go toward making software speak the same vocabulary and a testable vocabulary at that, would be wonderful. I can see its immediate advantages.
Permalink, Vocabulary and Behavior Driven Development, Nov 2009, cam

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