A development team uses an Amazon Aurora database for testing. The database is only used during business hours and sits idle on weekends and nights. What is the MOST cost-effective way to run this database?

Answer options:

Purchase an All Upfront Reserved Instance.

Write a Lambda function to stop and start the database daily.

Use Amazon Aurora Serverless.

Migrate the database to Amazon EC2 Spot Instances.

How to approach this question

Identify the intermittent workload ('idle on weekends and nights'). Serverless databases are perfect for this.

Full Answer

C.Use Amazon Aurora Serverless.✓ Correct

Amazon Aurora Serverless is an on-demand, auto-scaling configuration for Aurora. It automatically starts up, shuts down, and scales capacity up or down based on your application's needs. It is the most cost-effective option for infrequent, intermittent, or unpredictable workloads.

Common mistakes

Choosing to write custom Lambda scripts, which violates the 'least operational overhead' principle.

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