Firebase is a mobile and web application development platform developed by Google. It provides a number of services for building and managing applications, including a real-time database, user authentication, and hosting. Firebase development involves using these services to build and maintain applications that run on the Firebase platform. This can include creating new applications from scratch, integrating Firebase into existing applications, and managing the deployment and maintenance of applications on the Firebase platform. Enlyft data shows 200,129 companies using Firebase, most commonly at teams of 1-10 employees building fast, backend-light MVPs.