This post discusses the importance of role-based authorization in web applications, specifically using Netlify as an authentication provider. It explores two strategies for setting user roles: directly from the Netlify dashboard and via a serverless Lambda function. The author creates a custom Lambda function to manage user roles based on their email domain, assigning a role of "editor" for trusted company domains and "visitor" otherwise. This allows for more granular control over access to sensitive content, enabling developers to build robust web applications with Netlify's authentication features.