An architect is designing a highly resilient, multi-region serverless application. The application uses Amazon API Gateway, AWS Lambda, and Amazon DynamoDB. Which THREE configurations are required to achieve an active-active multi-region architecture? (Select THREE)

Answer options:

Deploy API Gateway and Lambda functions in both regions.

Configure DynamoDB Global Tables to replicate data across both regions.

Use Amazon Route 53 with a Latency routing policy to route traffic to the API Gateways.

Configure AWS Global Accelerator to replicate the DynamoDB data.

Use Amazon S3 Cross-Region Replication for the Lambda deployment packages.

Configure API Gateway to use VPC Peering to access the database in the other region.

How to approach this question

Identify the multi-region components: Compute (deploy in both), Database (Global Tables), and Routing (Route 53).

Full Answer

Deploy API Gateway and Lambda functions in both regions. Configure DynamoDB Global Tables to replicate data across both regions. Use Amazon Route 53 with a Latency routing policy to route traffic to the API Gateways.

For a multi-region active-active serverless app, you must deploy the API Gateway and Lambda stack in both regions. DynamoDB Global Tables handle the active-active data replication. Route 53 Latency routing ensures users are directed to the region closest to them.

Common mistakes

Thinking Global Accelerator replicates data.

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