A global application requires a relational database that can span multiple AWS Regions. The database must provide sub-second data access to users worldwide and support disaster recovery with an RPO of less than 1 second and an RTO of less than 1 minute. Which database solution meets these requirements?

Answer options:

Amazon RDS for MySQL with Cross-Region Read Replicas

Amazon DynamoDB Global Tables

Amazon Aurora Global Database

Amazon Redshift cross-Region snapshots

How to approach this question

Identify the keywords: 'relational database', 'multiple regions', 'sub-second replication', 'fast RTO'. This points directly to Aurora Global Database.

Full Answer

C.Amazon Aurora Global Database✓ Correct

Amazon Aurora Global Database

Amazon Aurora Global Database is designed for globally distributed applications, allowing a single Amazon Aurora database to span multiple AWS Regions. It replicates data with no impact on database performance, enables fast local reads with low latency, and provides disaster recovery from region-wide outages with an RPO of typically under 1 second and an RTO of under 1 minute.

Common mistakes

Choosing DynamoDB Global Tables, missing the 'relational database' requirement.

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