Advantage: Culture Most early-stage founders underestimate how much culture shapes their startup’s future. Get it right early, and it becomes your competitive advantage. Get it wrong, and it can quietly kill your company. In Advantage: Culture , startup culture evangelist Jaïr Halevi distills lessons from coaching over 1,000 startups and interviewing dozens of founders — from early-stage YC-backed teams to unicorns like Miro , Remote , Mews , and Airbnb. Through real stories that connect to a practical framework , this book helps you build your foundation intentionally — learning how to hire the right people, not the best , create psychological safety , and design your own Invisible Manager . You’ll learn from founders before you, so you don’t have to make the mistakes that can be fatal. Advantage: Culture is the essential playbook for founders who want to build authentic startups that thrive through chaos, evolve with purpose, and last. With practical exercises in key chapters, you’ll turn reflection into action and start shaping your culture intentionally. It’s about turning your culture from implicit to explicit — and your startup from reactive to resilient .