In 2017, web performance products Mirage and Rocket Loader were optimized to be even faster, reducing the loading time of around 1.2 billion web pages per week. These updates have led to significant improvements in user engagement and lower bounce rates on websites using these services. The changes involved rewriting parts of the Cloudflare's asynchronous-module-definition (AMD) loader, removing unused code, and switching from AMD to Rollup for better performance.