The answer is Azure Event Grid because it is purpose-built for the publish-subscribe event pattern, allowing a single event source to fan out to multiple independent subscribers, each processing at its own pace, with a default event retention period of up to 7 days. This service decouples event producers from consumers, enabling reliable, at-least-once delivery without requiring subscribers to be constantly available. On the AZ-204 exam, this scenario tests your ability to distinguish between Azure messaging services: Event Grid is optimized for discrete, reactive events and simple pub/sub, while Service Bus topics offer similar fan-out but with longer retention and more complex routing, and Event Hubs is designed for high-throughput data streaming, not individual event handling. A common trap is choosing Service Bus topics because they support pub/sub, but the exam emphasizes that Event Grid is the simpler, more appropriate choice for lightweight event broadcasting with a 7-day retention limit. Memory tip: think "Grid" for "grab and go" events—short-lived, independent, and broadcast to many.
AZ-204 Practice Question: Connect to and consume Azure services and third-party services
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. 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 developing a microservice that needs to publish events to multiple subscribers. Each subscriber should receive the event independently and at its own pace. The event must be retained for up to 7 days. Which Azure messaging service should you use?
Why wrong: Service Bus queues are for point-to-point communication, not pub/sub.
B
Azure Service Bus topic
Why wrong: Service Bus topics support pub/sub but are more suitable for enterprise messaging with complex routing; Event Grid is simpler for discrete events.
C
Azure Event Grid
Event Grid supports pub/sub with independent subscribers and retention up to 7 days.
D
Azure Event Hubs
Why wrong: Event Hubs is for streaming large volumes of data, not for discrete event fan-out.
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
Option D is correct because Event Grid supports event publishing to multiple subscribers, each receiving the event independently, and has a retention period of up to 7 days by default (configurable up to 7 days). Option A is wrong because Service Bus queues are for point-to-point communication, not pub/sub. Option B is wrong because Event Hubs is for streaming large volumes of data, not for discrete event fan-out. Option C is wrong because Service Bus topics support pub/sub, but the default retention is up to 14 days, but the requirement is for 7 days; however, Event Grid is more appropriate for discrete events and has simpler integration.
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 Service Bus queue
Why it's wrong here
Service Bus queues are for point-to-point communication, not pub/sub.
✗
Azure Service Bus topic
Why it's wrong here
Service Bus topics support pub/sub but are more suitable for enterprise messaging with complex routing; Event Grid is simpler for discrete events.
✓
Azure Event Grid
Why this is correct
Event Grid supports pub/sub with independent subscribers and retention up to 7 days.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Event Hubs
Why it's wrong here
Event Hubs is for streaming large volumes of data, not for discrete event fan-out.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
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.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→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 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. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Connect to and consume Azure services and third-party services — This question tests Connect to and consume Azure services and third-party services — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Event Grid — Option D is correct because Event Grid supports event publishing to multiple subscribers, each receiving the event independently, and has a retention period of up to 7 days by default (configurable up to 7 days). Option A is wrong because Service Bus queues are for point-to-point communication, not pub/sub. Option B is wrong because Event Hubs is for streaming large volumes of data, not for discrete event fan-out. Option C is wrong because Service Bus topics support pub/sub, but the default retention is up to 14 days, but the requirement is for 7 days; however, Event Grid is more appropriate for discrete events and has simpler integration.
What should I do if I get this AZ-204 question wrong?
Identify which AZ-204 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. Which TWO services can be used to implement a publish-subscribe messaging pattern in Azure?
medium
A.Azure Storage Queues
B.Azure Event Hubs
✓ C.Azure Service Bus Topics
✓ D.Azure Event Grid
E.Azure Queue Storage
Why C: Azure Service Bus Topics and Azure Event Grid both support publish-subscribe. Option B is wrong because Storage Queues use point-to-point. Option D is wrong because Event Hubs is for event ingestion, not pub-sub. Option E is wrong because Azure Queue Storage is point-to-point.
Last reviewed: Jun 20, 2026
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This AZ-204 practice question is part of Courseiva's free Microsoft certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the AZ-204 exam.
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