Open Policy Agent (OPA) vs. Google Zanzibar: A Brief Comparison

Hi everyone,

I’m one of the maintainers of the OSS project Permify ([https://github.com/Permify/permify](https://github.com/Permify/permify)), an open-source authorization service inspired by Google Zanzibar, which is the global authorization system/policy engine used at Google to handle authorization for hundreds of its services and products, including YouTube, Drive, Calendar, Cloud, and Maps.

I would like to share with you a post where I compared two of the most popular policy engines for building granular authorization systems at scale.

Here's the post if you're interested: …

agent authorization building cybersecurity google open policy agent policy popular scale share systems