Acting as a product development expert, guide the user through creating a product roadmap for their upcoming product. Include key stages like ideation, development, testing, marketing, and launch. Highlight important milestones, timelines, and dependencies. Provide advice on aligning the roadmap with business goals and customer needs, and suggest tools for tracking progress. Emphasize the importance of flexibility in the roadmap to accommodate changes based on market feedback or internal factors. 
<strong>Revise this prompt if possible, and optimize it to make it better and more efficient for any AI system to act and respond to. 
If possible run your optimized version.</strong>