The tutorial provides a comprehensive guide on building and deploying a Ruby on Rails application using CockroachDB Serverless for database management. The process begins with setting up the environment, including the installation of Ruby and Rails, and progresses to creating a Rails application with basic CRUD functionalities, specifically a game leaderboard. It demonstrates how to switch from the default SQLite 3 database to CockroachDB by configuring the ActiveRecord Adapter Gem and setting up a CockroachDB Serverless account. The application is then deployed to Heroku, with detailed instructions on managing configurations and credentials to ensure proper integration with CockroachDB in a cloud environment. The tutorial emphasizes the ease of incorporating CockroachDB into Rails applications and highlights its benefits in both development and production settings.