The Twilio + Heroku Ruby Challenge was a project that utilized the instant Ruby platform Heroku and Twilio to create an application that provides information on open places on campus, even without a mobile browser, by allowing users to call in with a PIN code. The application is live on Heroku and the code is available on Github for others to try and learn from. This project showcases the capabilities of Twilio's API and Heroku's platform for building communication and digital engagement experiences.