Progressive enhancement for the win! This post from the Edge team demonstrates that producing markup directly rather than relying on JavaScript to do it for you is faster — even in the browser UI!

In this project, we built an entirely new markup-first architecture that minimizes the size of our bundles of code, and the amount of JavaScript code that runs during the initialization path of the UI. This new internal UI architecture is more modular, and we now rely on a repository of web components that are tuned for performance on modern web engines.  We also came up with a set of web platform patterns that allow us to ship new browser features that stay within our markup-first architecture and that use optimal web platform capabilities.