Twilio is a platform that powers communication regardless of the language or framework used for a project. In this tutorial, you'll learn how to send an SMS directly from a Ruby application using Twilio's Ruby Helper Library to make it even faster. To complete the tutorial, you need a free Twilio account, Ruby version 2.7 or later, Bundler, and a smartphone with active service. You also need to get your Twilio phone number, which can be done by purchasing one from the Twilio Console. The Ruby application requires four things: Twilio Account SID, Auth Token, sender's phone number, and recipient's phone number. These are stored as environment variables for convenience. The code is simple, importing the twilio-ruby Gem, initializing a client with the account credentials and phone numbers, creating a message using the `client.messages.create` method, and printing the SMS sid if successful. The tutorial concludes by testing the code and highlighting the potential applications of sending SMS in various projects.