The correct answer is that inbound data to Azure is free, while outbound data transfer incurs charges. This pricing model is rooted in the economics of cloud bandwidth: Microsoft absorbs the cost of data entering its network to encourage migration and ingestion, but charges for egress to cover the significant expense of data leaving Azure data centers to the internet or other regions. On the AZ-900 exam, this concept tests your understanding of fundamental Azure cost management, often appearing as a straightforward multiple-choice question where the trap is assuming both directions are billed equally or that inbound has a fee. A reliable memory tip is to think of Azure as a free-entry museum—you can walk in for nothing, but you pay to take things out.
AZ-900 Describe cloud concepts Practice Question
This AZ-900 practice question tests your understanding of describe cloud concepts. 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.
Which of the following correctly describes Azure's approach to pricing for data transfer?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Inbound data to Azure is free; outbound data transfer incurs charges
Azure charges for outbound data transfer (egress) from Azure data centers to the internet or other regions, while inbound data transfer (ingress) into Azure is free. This pricing model encourages customers to move data into Azure without upfront cost, but charges apply when data leaves Azure's network, reflecting the bandwidth costs incurred by Microsoft.
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.
✗
All data transfer (inbound and outbound) is charged at the same rate
Why it's wrong here
Azure charges for outbound data; inbound data is free.
✓
Inbound data to Azure is free; outbound data transfer incurs charges
Why this is correct
Azure doesn't charge for data coming into Azure (ingress); charges apply to data leaving Azure (egress).
Related concept
Read the scenario before looking for a memorised answer.
✗
Data transfer is entirely free within Azure regardless of direction or region
Why it's wrong here
Outbound data and cross-region data transfer incur charges; only inbound is free.
✗
Data transfer is charged based on the speed of the transfer, not the amount
Why it's wrong here
Azure charges based on the volume (GB) of data transferred, not transfer speed.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often assume all data transfer is free or uniformly priced, overlooking Azure's specific policy of free inbound and charged outbound, which is a common cloud pricing pattern tested in AZ-900.
Detailed technical explanation
How to think about this question
Under the hood, Azure uses a tiered pricing model for outbound data transfer, with the first 5 GB per month free for most subscriptions, then charges per GB decreasing at higher volumes (e.g., $0.087/GB for the first 10 TB in the US). This model aligns with common cloud provider practices and is detailed in Azure's bandwidth pricing page, where costs vary by zone (e.g., inter-region vs. internet). A real-world scenario: moving a 100 GB backup from Azure to an on-premises datacenter would incur egress charges, while uploading that backup to Azure would be free.
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 startup's cloud architect reviews their monthly bill and notices costs are higher than expected for a long-running batch job. Switching from on-demand instances to Reserved Instances — or using Spot/Preemptible VMs — can reduce compute costs by up to 72 %. Questions like this test whether you understand the tradeoffs between commitment, flexibility, and cost across cloud pricing models.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-900 question in full detail.
Describe cloud concepts — This question tests Describe cloud concepts — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Inbound data to Azure is free; outbound data transfer incurs charges — Azure charges for outbound data transfer (egress) from Azure data centers to the internet or other regions, while inbound data transfer (ingress) into Azure is free. This pricing model encourages customers to move data into Azure without upfront cost, but charges apply when data leaves Azure's network, reflecting the bandwidth costs incurred by Microsoft.
What should I do if I get this AZ-900 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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