Governance at Scale

How do you stop a junior developer from accidentally creating a $5,000-a-month Virtual Machine? You use Azure Policy.

1. Azure Policy

Policies are JSON-based rules that govern your subscription. You can enforce rules like 'Only allow West Europe Region', 'Every resource must have a Project Tag', or 'Disable Public IP addresses on SQL servers'. If a user tries to break the rule, Azure blocks the deployment (Deny effect).

2. Azure Blueprints

Blueprints allow you to package a whole environment (Resource Groups, Policies, Role Assignments, and ARM Templates) into a single repeatable object. This is perfect for setting up a new 'Landing Zone' for a new team or project in one click.

3. Architect Insight

Q: "Is Azure Policy just for blocking?"

Architect Answer: "No. You can also use the **DeployIfNotExists** and **Modify** effects. For example, you can have a policy that automatically enables 'Application Insights' and 'Diagnostic Logs' whenever someone creates a new Web App. This ensures your observability standards are met without human intervention."