Cloud & DevOps: Azure Architecture ☁️
When you deploy resources in Azure, they fit into a well-defined hierarchy. Grasping this structure is crucial for effectively managing costs, access, and organization as you scale up:
🔹 Azure AD tenant – this is your organization's identity boundary
🔹 Management groups – these help you bundle subscriptions for a unified policy
🔹 Subscriptions – they serve as your billing and access boundary
🔹 Resource groups – think of these as logical containers for related resources
🔹 Resources – these are the actual VMs, storage accounts, apps, and more
Imagine it like a series of folders within folders: everything is neatly organized, allowing you to manage permissions and costs from the top down.
Next up: Identity & Access Management (IAM) 🔐
In Azure, IAM operates on Role-Based Access Control (RBAC). Access isn’t just a simple "on" or "off" switch; it’s made up of three components:
1️⃣ Who – the security principal (this could be a user, group, or app)
2️⃣ What – the role definition (like Owner, Contributor, Reader)
3️⃣ Where – the scope (this could be a management group, subscription, resource group, or resource)
When you combine all three, you create a role assignment — the specific permission that grants access.
💡 Key takeaway: Always assign the least privilege necessary, at the smallest scope possible. This is the golden rule of cloud security.
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