The correct choice is Azure Application Gateway, because it provides Layer 7 load balancing with native SSL/TLS termination and custom domain support, allowing you to securely expose your containerized application without directly exposing the Azure Container Instances group. When you add a custom domain to the Application Gateway’s frontend IP and upload an SSL certificate, the gateway terminates HTTPS connections at the edge and forwards traffic to the container group over HTTP, meeting both requirements cleanly. On the AZ-204 exam, this scenario tests your understanding of how to integrate container workloads with Azure networking services—a common trap is choosing Azure Front Door or a simple load balancer, but only Application Gateway offers integrated SSL offloading and custom domain binding for Container Instances. Remember the memory tip: “Gateway guards and terminates”—the Application Gateway is the single entry point that handles certificates and custom domains, while the container group stays internal and HTTP-only.
AZ-204 Develop Azure compute solutions Practice Question
This AZ-204 practice question tests your understanding of develop azure compute solutions. 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.
You are deploying a containerized application to Azure Container Instances. The application requires a custom domain name and SSL/TLS termination. You need to configure these features. Which resource should you create alongside the container group?
Why wrong: Azure Front Door is a global load balancer and application delivery controller, but for a single container group with SSL termination, Azure Application Gateway is more appropriate and less complex.
B
Azure Application Gateway
Azure Application Gateway can terminate SSL, route traffic based on host names, and assign a custom domain to the container group.
C
Azure Container Registry
Why wrong: Azure Container Registry stores container images; it does not provide custom domain or SSL termination for running containers.
D
Azure DNS zone
Why wrong: Azure DNS zone only manages DNS records; it does not terminate SSL or route traffic to containers.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Application Gateway
Azure Application Gateway provides Layer 7 load balancing with SSL/TLS termination and custom domain support. By associating a custom domain with the Application Gateway's frontend IP and uploading an SSL certificate, you can terminate HTTPS connections at the gateway and forward traffic to the container group over HTTP. This meets the requirement without exposing the container group directly.
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 Front Door
Why it's wrong here
Azure Front Door is a global load balancer and application delivery controller, but for a single container group with SSL termination, Azure Application Gateway is more appropriate and less complex.
✓
Azure Application Gateway
Why this is correct
Azure Application Gateway can terminate SSL, route traffic based on host names, and assign a custom domain to the container group.
Related concept
Read the scenario before looking for a memorised answer.
✗
Azure Container Registry
Why it's wrong here
Azure Container Registry stores container images; it does not provide custom domain or SSL termination for running containers.
✗
Azure DNS zone
Why it's wrong here
Azure DNS zone only manages DNS records; it does not terminate SSL or route traffic to containers.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates often confuse Azure Front Door's global SSL termination with the regional, direct SSL termination needed for a single container group, or mistakenly think a DNS zone alone can handle SSL termination.
Detailed technical explanation
How to think about this question
Application Gateway uses a listener to bind a custom domain and SSL certificate, then routes traffic to a backend pool containing the container group's private IP via HTTP. The gateway handles the TLS handshake and decryption, offloading SSL processing from the container. In production, you can use Azure Key Vault to store the SSL certificate and reference it in the gateway's HTTPS listener for automated rotation and security.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this AZ-204 question in full detail.
Develop Azure compute solutions — This question tests Develop Azure compute solutions — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Azure Application Gateway — Azure Application Gateway provides Layer 7 load balancing with SSL/TLS termination and custom domain support. By associating a custom domain with the Application Gateway's frontend IP and uploading an SSL certificate, you can terminate HTTPS connections at the gateway and forward traffic to the container group over HTTP. This meets the requirement without exposing the container group directly.
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.
About these practice questions
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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. You are deploying a containerized application to Azure Container Instances. The application requires a custom domain name and SSL/TLS certificate. What should you do?
easy
✓ A.Place an Azure Application Gateway in front of the container group.
B.Configure the container to listen on port 443 and map a custom domain.
C.Upload the certificate to the container and configure the web server.
D.Use a private endpoint with a custom domain.
Why A: Azure Container Instances (ACI) does not natively support custom domain names or SSL/TLS termination. By placing an Azure Application Gateway in front of the container group, you can offload SSL/TLS termination at the gateway layer, map a custom domain via the gateway's frontend IP, and route traffic to the container group's private IP. This is the recommended pattern for adding HTTPS and custom domains to ACI workloads.
Last reviewed: Jun 11, 2026
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