The text discusses building a GroupMe clone using Meteor, MongoDB, and Twilio. The application allows users to create groups of phone numbers and blast a text message to every member of that group. The project uses ES6 syntax and Meteor's publish-subscribe paradigm to manage data subscriptions and updates between the client and server. The code covers various aspects, including setting up Meteor, installing dependencies, creating templates for the front-end, defining helper functions for the back-end, and integrating Twilio for SMS functionality. The application also includes features like toggling group and number selections, deleting groups and numbers, and sending messages to selected phone numbers via SMS. The tutorial concludes with deployment instructions and important considerations for production environments.