Agile approach doesn't mean that there are no requirements documents and no milestones. You're still supposed to write requirements in some form (e.g. user stor

Agile approach doesn't mean that there are no requirements documents and no milestones. You're still supposed to write requirements in some form (e.g. user stories and test cases) and plan a few months ahead (while being ready to correct your course based on user feedback after every sprint).