it has been seen in recent years that agile software testing comes out as a most productive, promising and effective testing technique in large scale and small scale software development process. Testing is one of the prominent and continuous activities in the agile process. Transition of the testers from heavyweight traditional process to an agile lightweight process becomes challenging and sometime they feel that they are micromanaged because of the continuous interaction with project leaders. In this paper we have identified challenges of the agile testing, skills which tester should have for working in agile projects and provided agile success factors. If any agile projects consider the success factor and adhere to them then project will be delivered successful with minimum issues