You can't even look at code or documentation for Astro (publicly) yet — it's an in-progress idea — but you can watch a video of Fred showing it off to

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Astro is an in-progress site-builder framework built on top of React and Vue. It ships no JavaScript to the front-end at all, unless you specifically opt-in to it. It has scoped-CSS-by-default like Vue’s <style scoped> , meaning it doesn’t even need CSS Modules since you get all the benefit anyway. It embraces the idea of Islands Architecture — the idea that most sites are composed of static content with only parts of interactive/dynamic content.