Fauna is a distributed, document-relational database designed to abstract away operational tasks associated with maintaining and scaling an application. It offers a global API, zero-ops delivery, fine-grained access control, and a document-relational data model that combines flexibility and horizontal scalability without sacrificing security, joins, unique constraints, and user-defined functions. Fauna's operational model improves business outcomes by delivering high availability, auto-replication, active-active writes, and strict serializability by-default, allowing for increased development velocity and scalability over MongoDB Atlas' provisioned managed service. Additionally, Fauna's document-relational data model accommodates shifting access patterns and more dynamic, global applications, while its advanced querying capabilities provide a rich set of functional programming and relational database utilities.