Build Permission-Aware SMS Notifications with Go, Twilio, and Permit.io

This tutorial demonstrates how to build a role-based SMS notification system using Go, Twilio, and Permit.io, focusing on sending messages to users based on their permissions and roles. The system is designed to ensure that only authorized users, such as managers or department heads, can send notifications to the appropriate recipients. Twilio provides the SMS functionality, while Permit.io handles the authorization logic, allowing for fine-grained access control. Users can register with roles like programmer or technician, submit requests, and receive notifications when their requests are approved or rejected. The tutorial includes setting up a Go backend service, configuring Permit.io for role and permission management, and integrating Twilio for SMS delivery. It also covers user registration, login, session management, and enforcing role-based access controls, culminating in a secure, structured communication system that can be expanded with additional features like email or push notifications.