AuthZed Serverless is a cloud-based, self-service authorization service provided by AuthZed. It offers a managed implementation of SpiceDB, an open-source database system inspired by Google Zanzibar, designed for storing and computing permissions data. AuthZed Serverless is built to support the creation and application of authorization schemas that model application resources and permissions. It provides APIs for inserting and checking permissions in applications, aiming to simplify the implementation of complex, security-critical authorization systems. The service offers secure infrastructure for fast deployment and scalability of permissions systems, allowing for handling authorization at scale, suitable for applications with a large number of users and objects.