This AZ-204 practice question tests your understanding of connect to and consume azure services and third-party services. 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. A key principle to apply: azure Event Grid uses a publish-subscribe model.. 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.
A system receives high-volume event notifications from Azure resources and routes them to serverless handlers. Events are lightweight and should use native event routing. Which service should be used? The architecture review board prefers a managed AWS-native control.
Azure DNS
Why wrong: Azure DNS manages DNS zones and does not route application events.
Azure Event Grid
Event Grid is designed for reactive event routing from Azure services and custom publishers.
Azure Files
Why wrong: Azure Files provides SMB/NFS shares, not event routing.
Azure Service Bus queue
Why wrong: Service Bus is better for enterprise messaging with commands and durable queues.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Azure Event Grid
Azure Event Grid is the correct choice because it is a fully managed event routing service designed for high-volume, lightweight event notifications using native event routing (HTTP push). It directly supports Azure resource events and serverless handlers like Azure Functions, aligning with the requirement for native event routing without polling or queuing overhead.
Key principle: Azure Event Grid uses a publish-subscribe model.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Azure DNS
Why it's wrong here
Azure DNS manages DNS zones and does not route application events.
Azure Event Grid
Why this is correct
Event Grid is designed for reactive event routing from Azure services and custom publishers.
Related concept
Azure Event Grid uses a publish-subscribe model.
Azure Files
Why it's wrong here
Azure Files provides SMB/NFS shares, not event routing.
Azure Service Bus queue
Why it's wrong here
Service Bus is better for enterprise messaging with commands and durable queues.
Common exam traps
The trap here is confusing Azure Event Grid (push-based, lightweight event routing) with Azure Service Bus (pull-based, durable messaging), leading candidates to choose Service Bus for its familiarity with queuing, despite the requirement for native event routing.
Trap categories for this question
Command / output trap
Service Bus is better for enterprise messaging with commands and durable queues.
Detailed technical explanation
Azure Event Grid uses a publish-subscribe model with HTTP webhook endpoints, supporting at-least-once delivery and automatic retry with exponential backoff. It can route events from over 20 Azure sources (e.g., Blob Storage, Resource Groups) to handlers like Azure Functions, Logic Apps, or custom HTTPS endpoints, with a maximum event size of 1 MB and a latency under one second in most cases. A real-world scenario is triggering a serverless function on every new blob upload in a storage account, where Event Grid's native routing avoids the cost and complexity of polling or queuing.
Key takeaway
Azure Event Grid uses a publish-subscribe model.
Real-world example
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Azure Event Grid uses a publish-subscribe model. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
What to study next
Review azure Event Grid uses a publish-subscribe model., then practise related AZ-204 questions on the same topic to reinforce the concept.
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FAQ
Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Azure Event Grid uses a publish-subscribe model..
The correct answer is: Azure Event Grid — Azure Event Grid is the correct choice because it is a fully managed event routing service designed for high-volume, lightweight event notifications using native event routing (HTTP push). It directly supports Azure resource events and serverless handlers like Azure Functions, aligning with the requirement for native event routing without polling or queuing overhead.
Review azure Event Grid uses a publish-subscribe model., then practise related AZ-204 questions on the same topic to reinforce the concept.
Azure Event Grid uses a publish-subscribe model.
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Last reviewed: Jun 11, 2026
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