resource-tags

Tags

What it is

Tags are name/value metadata you attach to resources (and resource groups) — e.g. environment=production, costcenter=finance, owner=platform. They are free-form and unlimited in count.

Why it exists

Tags let you organize, classify, and query resources for cost reporting, resource management/filtering, and automation — Azure Cost Management and many dashboards group by tag. They support policy-driven tagging standards (e.g. require a costcenter tag via Policy).

Key ideas

• Apply to many resource types, not all; inherit at resource group level optionally.
• Not a permission control — tags are metadata, not RBAC. (Policy / role assignment governs access.)
• Policy tagging standards — use DeployIfNotExists/Modify with inheritFromResourceGroup to auto-apply tags.
• View/filter by tag in the portal, CLI (az resource list --tag), and Cost Management.

How it fits (diagram)

Exam notes

• Tagging is metadata, separate from names; name/location are not tags.
• Tag inheritance (portal applies on create; policy inheritFromResourceGroup for ongoing).
• Differentiate tags (metadata) from RBAC and Policy (rules).

Related

resource-group · azure-policy · azure-cost-management

📘 Source: Microsoft Learn — Resource Tags