Quick Answer
The answer is the auto-failover group. This feature is correct because it provides automatic, transparent failover of Azure SQL Database to a paired region using a built-in listener endpoint, handling both synchronous and asynchronous replication while requiring minimal administrative action through its health monitoring and configurable grace period. On the AZ-305 exam, this scenario tests your ability to distinguish between high-availability solutions—a common trap is confusing geo-replication (which requires manual failover) with auto-failover groups (which automate the process). Remember that the key differentiator is the listener endpoint: if the question emphasizes “automatic” and “minimal admin,” think auto-failover group. A helpful memory tip is “AG for DR”—Auto-failover Group for Disaster Recovery, where the listener acts like a traffic cop that automatically reroutes connections without you lifting a finger.
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.
An Azure SQL Database supports a customer-facing application. The company requires automatic failover to a paired region with minimal administrative action. Which feature should be recommended?
Zone-redundant storage only
Why wrong: Zone redundancy protects within a region, not regional failover.
Auto-failover group
Auto-failover groups provide geo-replication and listener endpoints for failover across regions.
SQL elastic pool only
Why wrong: Elastic pools manage shared resources and do not provide cross-region failover.
Azure Backup vault only
Why wrong: Backups support restore but do not provide automatic database failover.
Answer choices
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
Auto-failover group
Auto-failover groups in Azure SQL Database enable automatic, synchronous or asynchronous replication of databases to a paired region, with a built-in listener endpoint that handles transparent failover. This meets the requirement for minimal administrative action because failover can be triggered automatically based on the built-in grace period and health monitoring, without manual intervention.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
For each option: why learners choose it and why it is or isn't the right answer here.
Zone-redundant storage only
Why it's wrong here
Zone redundancy protects within a region, not regional failover.
Auto-failover group
Why this is correct
Auto-failover groups provide geo-replication and listener endpoints for failover across regions.
Related concept
Read the scenario before looking for a memorised answer.
SQL elastic pool only
Why it's wrong here
Elastic pools manage shared resources and do not provide cross-region failover.
Azure Backup vault only
Why it's wrong here
Backups support restore but do not provide automatic database failover.
Common exam traps
The trap here is that candidates often confuse zone-redundant storage (which protects against zone failures within a region) with cross-region failover, or mistakenly think an elastic pool provides disaster recovery capabilities when it is only a management unit for performance and cost.
Detailed technical explanation
Auto-failover groups use the Availability Groups technology under the hood, replicating data at the transaction log level with a configurable replication mode (synchronous for zero data loss within a region, asynchronous for cross-region). The failover group exposes a single read-write listener endpoint (e.g., `server.database.windows.net`) that automatically redirects connections to the new primary after failover, and a read-only listener for reporting workloads. A real-world scenario where this matters is during a regional disaster: the automatic failover can be triggered by a built-in grace period (default 1 hour) or manually, and the application only needs to retry the connection to the listener endpoint.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
A media company stores terabytes of video archives that are accessed once a year for audit purposes. Moving these objects to a cold storage tier (Azure Archive, S3 Glacier, or Google Nearline) costs a fraction of hot storage. Questions like this test whether you understand storage tiers, access frequency tradeoffs, and retrieval latency requirements.
What to study next
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FAQ
Design business continuity solutions — This question tests Design business continuity solutions — Read the scenario before looking for a memorised answer..
The correct answer is: Auto-failover group — Auto-failover groups in Azure SQL Database enable automatic, synchronous or asynchronous replication of databases to a paired region, with a built-in listener endpoint that handles transparent failover. This meets the requirement for minimal administrative action because failover can be triggered automatically based on the built-in grace period and health monitoring, without manual intervention.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Read the scenario before looking for a memorised answer.
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Last reviewed: Jun 11, 2026
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