Platform Optimization for Sponsored Content TikTok (2025 Algorithm Updates) Critical Changes - Watch time now weighs 5x more than likes or comments - 15-20 second engagement threshold replaced old 3-5 second hook metric - Completion rates determine 74% of For You Page placements - Videos 60-180 seconds achieve highest reach (2-3 min content drives 43.2% more views) - Content under 30 seconds now faces algorithmic disadvantages Optimal Structure - Hook in first 3 seconds (71% of viewers decide here) - Target 75%+ completion rate - Focus on watch time, not just likes - Engagement velocity in fi…