What testers do in agile?
coders + testers
In a perfect agile team, there are no people called as developers and testers. Entire team contributes to development and testing. So this article is non-existent in a perfect world. But in the real world, where developer (actually coders) and testers were in existence before agile came, this article finds a valid place. Development team does not mean coders. Software development comprises of coding and testing. So till now, we were mistakenly calling the "coder" and "developers". My view is "developers" = "coders" + "testers". So when we say development team in agile, we really mean coders and tester and any other roles which are required to achieve the say do ratio.In non-agile environment, the role of a tester includes analysis, test case design test case writing, and test case execution. He is involved right from the project initiation stage up to when the project is closed.
However, in agile environment his role primarily is to work as part of a development team, and to ensure that quality is built into a product by working closely with the product owner. This helps the tester get more details out of the story cards. It will be difficult for the development team to meet the acceptance criteria and consider a story "done" if the tester does not engage him/herself with the product owner. The role of a software tester in an Agile environment goes beyond “just testing” and logging bugs.