The answer is Azure Traffic Manager and Azure Front Door. Both services operate at the global level, providing DNS-based or anycast-based traffic routing that can automatically redirect users to a healthy alternate region when a regional outage is detected, using built-in health probes to monitor endpoint availability. On the Microsoft Azure Solutions Architect Expert AZ-305 exam, this concept tests your understanding of global versus regional load balancing—a common trap is confusing regional services like Application Gateway or Azure Load Balancer, which cannot span regions, with the global failover capabilities of Traffic Manager and Front Door. A key distinction is that Traffic Manager works purely at the DNS layer, while Front Door also offers application-layer acceleration and WAF integration. Remember the memory tip: if it needs to fail over across regions, think “global” services—Traffic Manager and Front Door are your only two native Azure options for automatic regional failover.
AZ-305 Design business continuity solutions Practice Question
This AZ-305 practice question tests your understanding of design business continuity solutions. 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 TWO Azure services can be used to automatically redirect traffic to an alternate region in the event of a regional outage? (Choose two.)
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Azure Traffic Manager
Azure Traffic Manager and Azure Front Door both provide global load balancing with automatic failover. Option A is incorrect because Application Gateway is regional. Option D is incorrect because Azure Load Balancer is regional. Option E is incorrect because Azure DNS does not provide traffic redirection based on health.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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 Application Gateway
Why it's wrong here
Application Gateway is a regional service and does not support cross-region failover.
Traffic Manager uses DNS-based routing and health probes to redirect traffic.
Related concept
Static NAT maps one inside address to one outside address.
✗
Azure DNS
Why it's wrong here
Azure DNS is a name resolution service, not a traffic routing service.
✓
Azure Front Door
Why this is correct
Front Door provides global HTTP(S) load balancing with automatic failover.
Related concept
Static NAT maps one inside address to one outside address.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
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. NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated. 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-305 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
Design business continuity solutions — This question tests Design business continuity solutions — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Azure Traffic Manager — Azure Traffic Manager and Azure Front Door both provide global load balancing with automatic failover. Option A is incorrect because Application Gateway is regional. Option D is incorrect because Azure Load Balancer is regional. Option E is incorrect because Azure DNS does not provide traffic redirection based on health.
What should I do if I get this AZ-305 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related AZ-305 NAT questions on configuration and troubleshooting.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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