The tutorial provides a comprehensive guide on building a modern photo-sharing application using a headless CMS architecture with Strapi as the backend and Nuxt 3 for the frontend. It begins by setting up a Strapi backend using PostgreSQL for the database and Cloudinary for image uploads, emphasizing the flexibility of choosing different frontend frameworks. The tutorial details the integration of GraphQL to manage content instead of the default REST API and explores creating a frontend with Nuxt 3, which includes SSR support and is compatible with Vue 3. Through step-by-step instructions, the tutorial covers setting up user authentication, creating and managing posts, and implementing features for user comments. It also demonstrates how to handle image uploads and previews using Cloudinary. The tutorial concludes by highlighting the benefits of using Strapi as an open-source headless CMS to build scalable and flexible applications, offering additional resources and GitHub links for further exploration.