The document introduces the concept of a mobile-first cloud and mobile backend as a service (mBaaS) platforms. A mBaaS abstracts the complexities of building mobile backends through cloud services, mobile SDKs, and a management console. It focuses on simplifying mobile app development and management. Examples show how a mBaaS can provide data storage, user authentication including with enterprise directories, integration with line of business systems, push notifications, events, and multi-factor authentication in a mobile-first way. The mobile-first cloud can drastically accelerate mobile app development times and management.