Product Owner:Roles:I work closely with the clients, fetch their requirements and implement and groom my backlog and push these requirements in the form of features to the development team.Product Manager:Roles:I supervise the whole project from start(Planning) to the end(deployement), working and supervising different teams of planners, developers, testers to achieve best quality software product using best standards possible.SQA:Roles:I test the software products and it's different components from the user end to achieve client satisfaction by providing best quality softwares.