The answer is Azure Lighthouse, the correct choice because it enables centralized multi-tenant governance by allowing managed service providers to manage resources across multiple Azure AD tenants from their own tenant using delegated administration via Azure Resource Manager. This eliminates the need for separate credentials or VPNs, providing a single control plane for cross-tenant management at scale. On the AZ-900 exam, this question tests your understanding of how Azure supports MSP scenarios, often appearing as a scenario-based question where you must identify the tool for unified management across customer environments. A common trap is confusing Azure Lighthouse with Azure Policy or Azure Blueprints, but remember that Lighthouse is specifically about cross-tenant delegation and visibility, not just compliance rules. Memory tip: think of a lighthouse shining across multiple ships—one light (your tenant) guiding many separate vessels (customer tenants) from a single vantage point.
AZ-900 Describe Azure management and governance Practice Question
This AZ-900 practice question tests your understanding of describe azure management and governance. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Which Azure feature enables centralized governance for multiple Azure AD tenants in a managed service provider (MSP) scenario?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Lighthouse
Azure Lighthouse enables centralized governance across multiple Azure AD tenants by allowing managed service providers (MSPs) to manage resources in customer tenants from their own tenant using delegated administration. It uses Azure Resource Manager (ARM) with delegated access, eliminating the need for separate credentials or VPNs, and supports cross-tenant management at scale.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Azure Management Groups
Why it's wrong here
Management Groups organize subscriptions within a single tenant; Lighthouse enables cross-tenant management.
✓
Azure Lighthouse
Why this is correct
Azure Lighthouse enables MSPs to manage multiple customer tenants and subscriptions from a single Azure tenant.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure AD B2B guest access
Why it's wrong here
B2B provides guest access for collaboration; Lighthouse provides delegated resource management for MSPs.
✗
Azure Enterprise Agreement multi-tenant billing
Why it's wrong here
EA manages billing; Lighthouse provides the resource management delegation for MSPs.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is confusing Azure Management Groups (which organize subscriptions within a single tenant) with Azure Lighthouse (which enables cross-tenant management), leading candidates to pick A when the question explicitly mentions multiple Azure AD tenants.
Detailed technical explanation
How to think about this question
Azure Lighthouse uses Azure delegated resource management, which relies on ARM and Azure AD to project customer tenant resources into the MSP's tenant. The MSP's users authenticate in their own tenant, and Azure AD issues tokens scoped to the delegated customer subscriptions or resource groups. This enables native tools like Azure Policy, Azure Blueprints, and Azure Monitor to operate across tenants without requiring guest user accounts or VPN connectivity.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Describe Azure management and governance — This question tests Describe Azure management and governance — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Lighthouse — Azure Lighthouse enables centralized governance across multiple Azure AD tenants by allowing managed service providers (MSPs) to manage resources in customer tenants from their own tenant using delegated administration. It uses Azure Resource Manager (ARM) with delegated access, eliminating the need for separate credentials or VPNs, and supports cross-tenant management at scale.
What should I do if I get this AZ-900 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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