Behaviour Driven Development (BDD) is an evolution of Test Driven Development that focuses on delivering prioritized and verifiable business value through establishing stakeholder goals, drawing out features to achieve those goals, and involving stakeholders in the implementation process. BDD adds acceptance criteria defined by customers, tests object behavior instead of structure, and uses a top-down "outside-in" development approach of specifying features and examples before code. Practices like Cucumber and RSpec are BDD tools that use a common language like Gherkin to describe features with scenarios and examples that can be automated.

1. Behaviour Driven Development

2. Communication Issue They are slow!.. They do not know what they need!..

3. Communication Issue They are slow!.. They do not know what they need!..

4. Building the communication bridge

5. Building the communication bridge

9. The BDD Cycle – “ Outside-In ” development as THE IDEAL BDD SCENARIO proposed 

14. Speaking the same language = building together As Expedia WW I want to build such a global online marketplace So that +5% of new customers are delighted and retained every month Given the investment of 22M of bricks When you place all the bricks properly Then the Expedia Tower of Babel should be visible for all people across the Globe