The tutorial provides a comprehensive guide on building a real-time chat application using Strapi, Socket.io, React, MongoDB, and PostgreSQL, emphasizing the importance of real-time messaging in chat apps. It details the process of setting up a PostgreSQL database with Strapi, creating a Strapi app, and integrating it with PostgreSQL using both quickstart and custom setup options. The guide also covers configuring Nodemailer for sending emails, implementing JSON Web Token (JWT) for authentication and authorization, and using Strapi to store user credentials. Furthermore, the tutorial explores setting up a chat environment with Socket.io for real-time communication, integrating a message storage system in Strapi, and establishing a simple login form with React. It also outlines creating a secure chat application with role-based authentication, where active users are managed in Strapi, and an admin can remove users. The tutorial concludes by encouraging users to leverage Strapi's capabilities to build more advanced applications, offering a GitHub repository for reference.