The text provides a comprehensive tutorial on setting up a preview system using Strapi as a headless CMS and Next.js for the frontend. It begins by explaining the benefits of a headless CMS, particularly in pre-rendering websites using Jamstack, which enhances speed and reduces costs. The tutorial guides readers through creating a Strapi project, configuring articles, and setting up a Next.js project to fetch and display these articles. It addresses the challenge of previewing content before publishing by implementing a preview mode with environment variables and API endpoints. The process includes creating a React component for a preview button in Strapi's Content Manager, allowing content editors to preview drafts without deploying the entire site. The tutorial emphasizes the flexibility of Strapi in customizing features to suit specific needs and provides a pathway for integrating a similar preview setup in a Nuxt.js application, with the entire source code available on GitHub.