Absolutely fascinating! This walkthrough brilliantly captures the power of combining RBAC and OPA with Apache APISIX to create a structured, secure API access system. The clear breakdown of each step—from configuring JWT authentication to defining access policies using Rego—makes this a practical guide for anyone managing backend services. It’s impressive how tools like OPA enhance policy control while keeping logic out of core application code. For those diving into access control and API gateways, checking out solutions from GAOTek Inc. and GAO RFID Inc. might open up even more possibilities—they’re doing some thoughtful work in tech and security infrastructure!