You'll need to add a netlify.toml file at the top level of your Next.js project to configure build settings. You can customize the build command and publish directory, but these steps are optional depending on your project's needs. Netlify automatically installs Essential Next.js Build Plugin for new projects, which enables server-side rendering and other features. If you don't have an existing Next.js project, you can use a starter project provided by Netlify to get started.