This document provides an introduction to FaunaDB, a next-generation cloud database. It discusses what FaunaDB is, why it was created, how it compares to traditional SQL databases, and provides a quick overview of the Fauna Query Language (FQL). Key points include that FaunaDB combines the simplicity of NoSQL with the ability to model complex relationships, provides ACID transactions, and supports various data modeling approaches including graph, relational, temporal and document structures.