The tutorial by Aydrian Howard outlines the process of building a Next.js web application hosted on Vercel, integrated with a CockroachDB database, for managing social events. It guides readers through creating a CockroachDB account, setting up a database, and implementing serverless functions using Node.js's PostgreSQL driver for database interactions. The application includes features such as adding events, responding to them, and displaying RSVP lists through a user interface built with React and Bootstrap. The tutorial emphasizes the ease of setting up a cloud-based relational database and deploying a serverless architecture, providing step-by-step instructions for both experienced JavaScript developers and newcomers to the CockroachDB and Next.js platforms. The live demo of the application is available at social-events-app.vercel.app, and the tutorial encourages users to experiment with building their own applications using the provided code and guidance.