The answer is the Consumption plan. This is the correct choice because the Consumption plan provides automatic scaling based on the number of incoming messages, such as those from Azure Service Bus, without requiring any manual configuration or capacity planning. On the Microsoft Azure Developer Associate AZ-204 exam, this question tests your understanding of Azure Functions hosting plans and their scaling behaviors, often appearing as a scenario where you must select the simplest plan that meets a scaling requirement. A common trap is confusing the Consumption plan with the Premium plan, which also scales automatically but includes additional features like VNET integration and pre-warmed instances; however, the question specifically asks for automatic scaling, and the Consumption plan is the most straightforward and cost-effective option. Remember the memory tip: “Consumption for automatic, Premium for extra.”
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.
A company uses Azure Functions to process messages from Azure Service Bus. The function needs to scale out during high load. Which consumption plan should you choose to enable automatic scaling?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Consumption plan
The Consumption plan automatically scales based on the number of incoming messages. Option A is wrong because App Service plan requires manual scaling. Option B is wrong because Premium plan also scales but has additional features; however, the question asks for automatic scaling, which both achieve, but Consumption is the simplest. Option D is wrong because Logic Apps is a different service.
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.
✗
Logic Apps plan
Why it's wrong here
Azure Logic Apps is a separate service, not a hosting plan for Azure Functions.
✗
Premium plan
Why it's wrong here
Premium plan also scales automatically but is more expensive; Consumption is simpler and cost-effective.
✓
Consumption plan
Why this is correct
Consumption plan automatically scales based on demand, ideal for event-driven workloads.
Related concept
Read the scenario before looking for a memorised answer.
✗
App Service plan
Why it's wrong here
App Service plan requires manual scaling or autoscale rules, not automatic scaling based on queue length.
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
An e-commerce site experiences heavy traffic on Black Friday and near-zero traffic during off-peak weeks. Rather than provisioning permanent large VMs, the team uses auto-scaling groups that add capacity automatically under load and reduce it overnight. Questions like this test whether you understand elasticity, availability zones, and cloud compute scaling patterns.
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: Consumption plan — The Consumption plan automatically scales based on the number of incoming messages. Option A is wrong because App Service plan requires manual scaling. Option B is wrong because Premium plan also scales but has additional features; however, the question asks for automatic scaling, which both achieve, but Consumption is the simplest. Option D is wrong because Logic Apps is a different service.
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.
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Question Discussion
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