The answer is concurrency control. This feature limits the number of workflow instances that can run simultaneously; by setting the concurrency limit to 1, you serialize all requests, ensuring the Logic App never fires more than one call at a time and thus respects the third-party API’s rate limit of 100 requests per minute. On the AZ-204 exam, this scenario tests your understanding of throttling patterns in Azure integration services—a common trap is confusing concurrency control with retry policies or batching, but remember that concurrency control directly caps parallel execution, not the number of retries. For the exam, think of it as a “one-at-a-time” gate: if you need to slow down throughput to match an external constraint, concurrency control is your go-to. Memory tip: “Concurrency = Countdown to One” to avoid rate-limit rejection.
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. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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 Logic Apps to integrate with a third-party REST API. The API has a rate limit of 100 requests per minute. You need to ensure that the Logic App respects this limit. Which connector feature should you configure?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Concurrency control.
Concurrency control in Azure Logic Apps limits the number of concurrent runs of a workflow. By setting the concurrency limit to 1, you ensure that only one instance of the Logic App executes at a time, effectively serializing requests and preventing the app from exceeding the third-party API's rate limit of 100 requests per minute. This is the correct feature to throttle throughput to match external constraints.
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.
✗
Retry policy.
Why it's wrong here
Incorrect. Retry policy handles transient failures, not rate limiting.
✓
Concurrency control.
Why this is correct
Correct. Concurrency control limits the number of in-flight requests, helping to stay within rate limits.
Related concept
Read the scenario before looking for a memorised answer.
✗
Swagger connector.
Why it's wrong here
Incorrect. Swagger connector is for importing API definitions, not throttling.
✗
API Management.
Why it's wrong here
Incorrect. API Management is an external service; Logic Apps has built-in concurrency control.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Retry policy (which handles failures after they occur) with concurrency control (which prevents the failures by limiting parallelism), leading them to select Retry policy as a proactive solution when it is actually reactive.
Detailed technical explanation
How to think about this question
Concurrency control works by acquiring a lease on the workflow instance; when set to 1, subsequent triggers are queued until the current run completes. This is implemented via the 'runAfter' property and the 'splitOn' directive under the hood, and it directly impacts the 'maxDegreeOfParallelism' setting in the workflow definition JSON. In real-world scenarios, failing to set concurrency control can cause a Logic App to fire multiple instances in parallel (e.g., when triggered by an event grid or a high-frequency timer), quickly exhausting a third-party API's rate limit and leading to 429 responses.
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 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.
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: Concurrency control. — Concurrency control in Azure Logic Apps limits the number of concurrent runs of a workflow. By setting the concurrency limit to 1, you ensure that only one instance of the Logic App executes at a time, effectively serializing requests and preventing the app from exceeding the third-party API's rate limit of 100 requests per minute. This is the correct feature to throttle throughput to match external constraints.
What should I do if I get this AZ-204 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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