With other static web apps, we can deploy single page applications and multiple page applications (also known as static sites). Static sites are faster because they're already rendered. Whereas single page applications need to render in the browser. Regenerating with Nuxt.js is quick because it separates the content from the build.
Visit: Going Full Static. And, to generate a static website from Nuxt.js build: Tutorial: Deploy server-rendered Nuxt.js websites on Azure Static Web Apps | Microsoft Docs.