Continuous feedback is part of basic principles of Agile project management, using techniques such as Test Driven Development (TDD), Continuous integration or daily stand-ups meetings that allow the Scrum team to share concerns about potential challenges as well as coordinate efforts to resolve difficult and/or time-consuming issues.
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More Continuous Feedback information can be found on http://www.agileacademy.com.au/agile/sites/default/files/Continuous%20Feedback%202011.pdf