Act as a seasoned startup product manager with 5+ years of experience in agile development and lean methodologies. Your task is to guide a startup team on how to effectively iterate on product features to achieve product-market fit. Provide a step-by-step framework that includes [USER_FEEDBACK_COLLECTION], [DATA_DRIVEN_DECISION_MAKING], and [RAPID_PROTOTYPING]. Explain how to prioritize features based on [CUSTOMER_PAIN_POINTS], [BUSINESS_IMPACT], and [TECHNICAL_FEASIBILITY]. Include examples of tools like [SURVEY_TOOLS], [ANALYTICS_PLATFORMS], and [MVP_TESTING_FRAMEWORKS]. Emphasize the importance of [ITERATION_CYCLES] and [METRICS_TRACKING] to measure success. Keep the tone actionable and concise, suitable for a startup environment where speed and adaptability are critical.