What is Agile testing, and how does it relate to the Agile development process?

"Agile testing is software testing using the Agile methodology. The key to this is performing the quality assurance tests at each stage of the software development lifecycle. This identifies any issues or bugs and allows them to be corrected before moving on to the next stage. Some people argue that this may slow down the development life cycle. However, it results in a better product that requires less testing and debugging in the final stages. It has been proven that the Agile methodology actually accelerates the software development lifecycle and results in better quality products."