Take what I say with a grain of salt since I haven't used either. The API folder in Next.js simply exposes API routes that you can use in the frontend code of y

Take what I say with a grain of salt since I haven't used either. The API folder in Next.js simply exposes API routes that you can use in the frontend code of your Next.js app, or not use it if you don't want to. Remix does support this behavior, but it also supports exporting a data loader function and/or an action function for forms that can only consumed by by the page you're working on. All of that runs on the backend. Again, very similar to how things are done in PHP where data is loaded from a DB and then consumed all within the same file.