For pre-seed and seed-stage SaaS CEOs, every lost deal is more than a missed sale — it’s market feedback you can’t afford to ignore. This in-depth guide explains how Win/Loss Analysis helps founders and GTM leaders refine their ICP, sharpen messaging, and boost win rates. By systematically capturing buyer feedback through interviews, you’ll uncover why prospects choose competitors, stall, or walk away. You’ll also learn the five-step Win/Loss process (planning, recruitment, interviews, analysis, and action) and see real-world SaaS examples of why buyers say “yes” or “no.” This blog post provides CEOs, heads of sales, and marketing executives with practical steps to turn lost deals into repeatable wins, accelerate product-market fit, and maximize runway. Don’t just chase more leads — learn from the ones that got away. Start building your Win/Loss engine today and transform early setbacks into long-term growth advantages.