Progressive web apps combine the benefits of responsive web apps with features like those of native apps. They are built using standard web technologies and meet requirements like being accessible offline, having push notifications, and being installable. Progressive web apps enhance the user experience by loading quickly, allowing offline use, and engaging users through notifications. They provide businesses benefits like lower costs than native apps, increased engagement through personalization, and the ability to function independently of network connectivity or browser choice. Progressive web apps are a valuable technology for e-commerce and other businesses seeking to boost conversions and profits cost-effectively.