Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company is developing a web application that will be deployed to Azure App Service. The application experiences unpredictable spikes in traffic, and the company wants the number of instances to automatically increase during high demand and decrease during low demand to optimize costs. The company also needs to use a custom domain name and ensure the application is accessible over HTTPS. Which App Service plan tier should the company choose?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
Free
The Free tier does not support custom domains, SSL, or autoscaling. It is intended only for development and testing with limited features.
B
Distractor review
Shared
The Shared tier supports custom domains but does not support SSL or autoscaling. It is still a low-cost tier for development/testing, not production workloads requiring HTTPS and dynamic scaling.
C
Distractor review
Basic
The Basic tier supports custom domains and SSL (with SNI), but it does not support automatic scaling (autoscale). Scaling must be done manually, which does not meet the requirement for automatic scaling based on traffic spikes.
D
Best answer
Standard
The Standard tier supports custom domains, SSL (with SNI and IP SSL), and automatic scaling (autoscale). This tier meets all the stated requirements: automatic scaling to handle unpredictable spikes, a custom domain, and HTTPS access. It is the minimum tier that provides all these capabilities.
Common exam trap
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.
Technical deep dive
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.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A developer is building a serverless application that requires integration with an on-premises SQL Server database for real-time data processing. The on-premises network is connected to Azure via a site-to-site VPN. Which Azure service would allow the function to securely access the on-premises database without exposing it to the public internet?
Question 2
A solutions architect is designing a storage solution for a large media company. The company needs to store video files that are accessed infrequently but must be retained for several years for compliance. Which two Azure storage options meet these requirements? (Select two.)
Question 3
A company deploys a multi-tier application using Azure virtual machines. The web tier VMs must be evenly distributed across two distinct data centers within an Azure region to avoid a single point of failure from an infrastructure outage. Which Azure construct should they use to meet this requirement?
Question 4
A company wants to enforce a set of security policies across all their Azure subscriptions. They have created several individual policy definitions. Which Azure construct should they use to group these policies together and assign them as a single package?
Question 5
A company deploys a line-of-business application on an Azure virtual machine. The IT team wants to ensure the application remains secure. According to the shared responsibility model, which of the following security tasks is the sole responsibility of the customer (the company)?
Question 6
A company develops a web API that runs on Azure App Service. The development team wants to deploy a new version of the API to a staging environment, run integration tests against it, and then gradually shift production traffic to the new version. If any issues are detected, they want to immediately roll back to the previous version without redeploying. Which Azure App Service feature should the team use to meet these requirements?
FAQ
Questions learners often ask
What does this AZ-900 question test?
Read the scenario before looking for a memorised answer.
What is the correct answer to this question?
The correct answer is: Standard — Azure App Service offers several plan tiers: Free, Shared, Basic, Standard, Premium, and Isolated. The Free and Shared tiers are intended for development and testing only; they do not support custom domains (Free) or SSL (Shared), and neither supports autoscaling. The Basic tier supports custom domains and SSL (with SNI) but only allows manual scaling, not automatic scaling. Standard and higher tiers (Premium, Isolated) support both custom domains with SSL and automatic scaling (autoscale). The requirement for automatic scaling and HTTPS with a custom domain makes the Standard tier the minimum appropriate choice. The Premium tier would also work but is more expensive and not strictly needed based on the requirements stated.
What should I do if I get this AZ-900 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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