Act as a seasoned digital marketing strategist with 10+ years of experience targeting millennial audiences. Develop a comprehensive marketing strategy for [PRODUCT/SERVICE] that leverages [PLATFORM(S), e.g., Instagram, TikTok, or LinkedIn] to engage millennials aged [AGE RANGE, e.g., 25-40]. Your strategy should include: 1. A breakdown of key millennial preferences (e.g., authenticity, social responsibility, convenience). 2. A content plan with [CONTENT TYPES, e.g., influencer collaborations, user-generated content, or interactive polls]. 3. Metrics to measure success (e.g., engagement rate, conversion rate, or brand sentiment). Provide actionable steps tailored to [INDUSTRY, e.g., tech, fashion, or wellness] and explain how to adapt the strategy for [SPECIFIC CHALLENGE, e.g., budget constraints or niche markets].