Agile testing is a software testing practice that follows the principles of agile software development. Agile testing involves all members of a cross-functional agile team, with special expertise contributed by testers, to ensure delivering the business value desired by the customer at frequent intervals, working at a sustainable pace. Many teams using these waterfalls or other traditional testing models find that as the product grows, the amount of testing grows exponentially–and Quality Assurance invariably struggles to keep up. With Agile, testing becomes an integral part of the core software development and actively participates though out the software coding process. Agile testing involves testing from the customer perspective as early as possible, testing early and often as code becomes available and stable enough from module/unit level testing. There are a lot of advantages of using Agile Testing. First of all, Agile Testing saves time and money which is the main benefit for organisations today. Clients can more readily understand the approximate cost of each feature, which improves decision making and determines priorities. With Agile Testing automated tests are fully leveraged to implement Regression; application delivery is accelerated and changing priorities effectively managed. Also, important advantage is that this software testing practice enables increasing of team productivity and project visibility and better addressing the business/technical aspects of the requirements with overall team alignment preventing misunderstandings. Test teams and development teams need to work closely and interact with each other quite often on a daily basis. This process includes everybody in the team (managers, developers, and customers), not only testers. With face to face communication they can more easily communicate which is much better than lengthy documents. It encourages close coordination and builds mutual trust among stakeholders and result is nets higher productivity for testing team. Whereas testing process faces with so many changes, this kind of work enables their accommodating and keeps the test team informed of such changes. Agile movement has a huge impact on software development, same as on testing and quality assurance.  It’s not only about the size of the process or the speed of delivery, it is about flexibility and promoting sustainable development.