Explore the challenges and opportunities of Progressive Web Apps (PWAs) in this conference talk by Jason Grigsby at performance.now() 2018. Dive into case studies, integrated PWA performance boosts, and methods for measuring service worker impact. Examine the hype surrounding PWAs, evaluate when they're necessary, and understand their limitations. Learn about creating fast, fluid experiences that feel like native apps, leveraging caching techniques, and planning beyond PWA implementation. Gain insights into the future of web development and how PWAs fit into the broader landscape of user experience and performance optimization.