Need to code, build, and deploy a full-stack web and mobile app, but short on time? Meet the fastest stack you've never heard of: Firebase, Expo, React Native, and Ignite- the FERNI Stack. This fast-paced session will walk you through writing a messaging app front-end in React Native that uses Firebase for authentication, data storage, and API. Then we'll learn how to build and deploy the app to web, iOS, and Android in a flash with the help of Expo. Throughout our journey, we'll be taking advantage of the smarts and scalability built into the Ignite boilerplate generator. This is a great session for anyone looking for shortcuts for their next hackathon project, as well as those interested in learning about any of the aforementioned technologies through realistic hands-on examples.