The document discusses how the role of testers has changed with the shift from waterfall to agile development methods. Specifically, it notes that testers were previously responsible for test plans, scripts, results, and environments under waterfall, but are now part of delivery teams involved in user testing, test-driven development, and ensuring tests are assets under agile. It raises challenges around hiring the right people, costs, and evaluating team performance given these changes to the testing role and process.