Zan Gilani, Principal Product Manager at Duolingo, shares intriguing insights into the AI avatar, Lily, enhancing language learning through conversation practice. He discusses the challenges of creating engaging conversational AI and emphasizes emotional well-being in the learning process. Zan also reveals Duolingo's innovative approach to gamification and user engagement, and how strategic A/B testing has shaped their product evolution. The conversation wraps up with valuable lessons on measuring success in learning products and scaling effectively.