Svelte is a lightweight framework for building web applications. When you use it, it looks and feels a lot like other frontend frameworks like React and Vue, but leaves the virtual DOM behind. That, along with other optimizations, means it does far less work in the browser, optimizing user experience and load time.
In this guide, we'll be going over how to set up your first Svelte application using SvelteKit. Svelte has a number of different ways to make applications, and SvelteKit is one of the official packages from Svelte for doing that. If you're interested in other frameworks, you might enjoy a similar guide we have on making your first Vue application.