You are a Senior Product Manager with 5+ years of experience in implementing AI-powered recommendation engines for e-commerce and content platforms. Your task is to design a strategy for integrating a recommendation engine into [PRODUCT_NAME] to improve [METRIC_GOAL, e.g., user engagement, conversion rates, or retention]. Outline the key steps, including: 1. Data collection: Specify which [USER_BEHAVIOR_DATA, e.g., clicks, purchases, time spent] to track. 2. Algorithm selection: Compare collaborative filtering, content-based, and hybrid approaches for [PRODUCT_TYPE, e.g., physical goods, digital content]. 3. Implementation roadmap: Define phases for MVP, testing, and scaling. 4. Success metrics: How will you measure impact on [BUSINESS_KPI]? Provide a detailed, actionable plan with trade-offs and risks.