Quick Answer
The answer is Microsoft Sentinel, as it is the correct primary platform to correlate alerts from multiple sources with Microsoft Sentinel as SIEM. This is because Microsoft Sentinel is a cloud-native Security Information and Event Management (SIEM) solution designed specifically to ingest, normalize, and correlate logs from diverse sources—including Microsoft Defender for Cloud, Microsoft 365 Defender, and third-party firewalls—using built-in analytics rules and fusion engines. On the Microsoft Cybersecurity Architect exam, this question tests your ability to distinguish SIEM from other security tools: Defender for Cloud is a Cloud Security Posture Management (CSPM) tool, not a SIEM, while Azure Monitor focuses on infrastructure metrics and logs without native security correlation. A common trap is confusing Microsoft 365 Defender (an extended detection and response tool for endpoints and email) with a SIEM, but it cannot ingest third-party firewall logs. Remember the memory tip: SIEM is the “single pane of glass” for all alerts, while CSPM and XDR are specialized lenses.
This SC-100 practice question tests your understanding of design security operations, identity, and compliance capabilities. 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.
You are designing a security operations strategy for a multinational organization. The SOC team needs to correlate alerts from multiple sources including Microsoft Defender for Cloud, Microsoft Sentinel, and third-party firewalls. Which solution should you use as the primary platform for correlation?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "primary"
Why it matters: Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Microsoft Defender for Cloud
Why wrong: Defender for Cloud focuses on cloud security posture, not multi-source SIEM correlation.
Microsoft 365 Defender
Why wrong: M365 Defender is for endpoints and email, not for all sources.
Azure Monitor
Why wrong: Azure Monitor is for telemetry, not SIEM correlation.
Microsoft Sentinel
Sentinel is a SIEM that can ingest and correlate data from various sources.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Microsoft Sentinel
Option B is correct because Microsoft Sentinel is a SIEM that can ingest logs from multiple sources and correlate alerts. Option A is incorrect because Defender for Cloud is a CSPM, not a SIEM. Option C is incorrect because Microsoft 365 Defender is for endpoint and email, not for third-party firewalls. Option D is incorrect because Azure Monitor is for infrastructure monitoring, not SIEM.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Microsoft Defender for Cloud
Why it's wrong here
Defender for Cloud focuses on cloud security posture, not multi-source SIEM correlation.
Microsoft 365 Defender
Why it's wrong here
M365 Defender is for endpoints and email, not for all sources.
Azure Monitor
Why it's wrong here
Azure Monitor is for telemetry, not SIEM correlation.
Microsoft Sentinel
Why this is correct
Sentinel is a SIEM that can ingest and correlate data from various sources.
Clue confirmation
The clue word "primary" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
A healthcare organisation deploys an application with a public-facing web tier and a private database tier. The database subnet has no public IP and only accepts connections from the web tier's security group. Questions like this test whether you can design cloud network isolation using VNets/VPCs, subnets, and security group rules.
What to study next
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-100 NAT questions on configuration and troubleshooting.
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FAQ
Design security operations, identity, and compliance capabilities — This question tests Design security operations, identity, and compliance capabilities — Static NAT maps one inside address to one outside address..
The correct answer is: Microsoft Sentinel — Option B is correct because Microsoft Sentinel is a SIEM that can ingest logs from multiple sources and correlate alerts. Option A is incorrect because Defender for Cloud is a CSPM, not a SIEM. Option C is incorrect because Microsoft 365 Defender is for endpoint and email, not for third-party firewalls. Option D is incorrect because Azure Monitor is for infrastructure monitoring, not SIEM.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related SC-100 NAT questions on configuration and troubleshooting.
Yes — watch for: "primary". Asks for the main purpose or function, not a secondary benefit. Eliminate answers that describe side-effects or partial functions.
Static NAT maps one inside address to one outside address.
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Last reviewed: Jun 21, 2026
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