Permify is an advanced authorization service tailored for developers looking to create and oversee detailed, scalable access control systems within their software applications. Drawing inspiration from Google's Zanzibar, it allows users to organize authorization models, store authorization data in chosen databases, and utilize its API for managing authorization queries across diverse applications and services. The service accommodates various access control models, such as Role-Based Access Control (RBAC) and Attribute-Based Access Control (ABAC), which support the development of detailed permissions and policies. By centralizing authorization logic, Permify abstracts it from the core codebase, making it simpler to reason about, test, and debug. Additionally, it offers a range of flexible policy storage options and includes a role manager for managing RBAC role hierarchies effectively. The platform enhances efficiency in large, multi-tenant setups by implementing filtered policy management, ensuring that access controls are enforced seamlessly across different environments. With its robust features, Permify stands out as a comprehensive solution for modern access management challenges.