Discover how to create adaptive and high-performing web applications in this 19-minute conference talk by Medhat Dawoud. Explore responsive design principles, data-driven decision-making, and practical implementation techniques to enhance user engagement through personalized web experiences. Learn the importance of testing and feedback in building web apps that effectively respond to user behavior and context. Gain insights from Medhat's expertise, presented at the performance.now() Pre-Event Meetup sponsored by Speed Kit in Amsterdam on November 1st, 2023.