AZ-900 Practice Question 34: Subscription Boundaries
Microsoft Azure Fundamentals (AZ-900) · Test 4 · question 4 of 10
A platform team is designing how to organize a large Azure estate. Why would they put a specialized high-performance computing workload into a subscription of its own rather than alongside everything else?
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Answer:
Subscriptions are a unit of management, billing, and scale. They act as boundaries for scale, quota, cost, governance, security, and identity, and Microsoft's guidance says so directly: large specialized workloads such as high-performance computing, IoT, and SAP should use separate subscriptions to avoid running up against platform limits.
Option A is contradicted outright; subscriptions aren't tied to a specific region and can be treated as global, and a single subscription can hold resources from many regions, so you do not need one subscription per region. Option B is backwards, and the real rule is a genuine reason to think *before* splitting: you can't share virtual networks across subscriptions, although you can connect them with peering or ExpressRoute. Option D is false; the subscription is one of the four standard scopes for a policy assignment, and a subscription is explicitly described as a policy boundary.