Rendering modes
With Nuxt you can decide what rendering strategy you want to use, if you like even at the route level.
Please refer to the Nuxt documentation about Rendering modes to learn more.
The following provides some additional overview about implication of each rendering mode when using it with Lupus Decoupled Drupal:
Server-side Rendering (SSR) - default
Server-side rendering is used as a default, which is best for SEO, and works the most seamlessly for editors thanks to the support of Drupal authentication. Nuxt supports server-rendering via regular (Node.js) servers or in a serverless way, e.g. at the edge.
Static-site Generation (SSG)
Static-site generation results in a set of pre-generated files which a regular HTTP server or a CDN can serve, what can help to make hosting much more simple. Additionally, by publishing only static files, site security can be improved. However, there is also a drawback: Editors need to be aware of the pre-rendering step, the frontend is static and no drupal-forms are supported (atm). Nuxt supports a preview-mode which can be implemented and provided to editors though. Read more about it in the Nuxt Prerendering Guide.
Client-side Rendering (CSR)
When SEO is not important and a small client-side rendering delay is acceptable to users, client-side rendering can be a simple alternative to server-side rendering, that does not require any special infrastructure. Just like with SSG, simply hosting static files is enough. Atm no drupal-forms are supported, but Drupal authentication works with the help of the Lupus Decoupled CORS sub-module.