The Agile testing environment creates strength in numbers. It aligns the talents and vision of your entire team to ensure the promise of your product becomes a market reality. Every stakeholder in your software development life cycle is involved from beginning to end. You can maintain an end-user focus through the development and analysis of daily builds using a cyclical, continuous integration model. The core of the Agile environment is the relationship between developers and testers. Each plays a vital role in what has traditionally been the other's exclusive domain. Developers participate in automated unit testing, for example, while testers are involved right from the initial sprint planning.