Astro is a third-party open-source server-first web framework created by EXDST, designed for creating fast, content-focused, server-first websites. It supports UI frameworks such as React, Vue, Preact, Svelte, Solid, and others, seamlessly integrating with projects and allowing the use of existing components.
Take into consideration that Sitecore does not directly build or maintain a Software Development Kit (SDK) for Astro out of the box. As Astro is an open-source community SDK, support or additional information should be sought directly from EXDST.
By using Astro, developers can enhance Sitecore projects with a robust and flexible framework, ensuring high performance and compatibility with a wide range of UI technologies.