Question #706
A company is implementing a disaster recovery (DR) strategy for its Amazon Connect contact center, which includes numerous contact flows, users, and claimed phone numbers across AWS Regions. The operations team aims to minimize the Recovery Time Objective (RTO).
Which solution provides the LOWEST RTO?
Provision a new Amazon Connect instance with contact flows and users in a second Region. Configure an Amazon CloudWatch alarm based on a Route 53 health check for the instance URL. Use an AWS Lambda function triggered by the alarm to deploy claimed phone numbers via an AWS CloudFormation template.
Create an Amazon EventBridge rule to invoke an AWS Lambda function every 5 minutes to check the primary instance's health. If unavailable, the Lambda function deploys a CloudFormation template to provision a new instance with users, contact flows, and claimed numbers in the second Region.
Provision a new Amazon Connect instance with users and contact flows in a second Region. Configure a Route 53 health check and CloudWatch alarm for the instance. Use a Lambda function triggered by the alarm to deploy claimed phone numbers via a CloudFormation template.
Pre-provision users and claimed numbers in a second Region. Use a CloudWatch alarm with a Route 53 health check to trigger a Lambda function that deploys contact flows via CloudFormation during failover.
Explanation
Option C provides the lowest RTO because it pre-provisions the Amazon Connect instance, users, and contact flows in the secondary Region. During failover, only claimed phone numbers need deployment via CloudFormation, which is faster than rebuilding the entire instance. Other options (A, B, D) require deploying more components (e.g., users, contact flows) during failover, increasing RTO. Pre-provisioning critical elements (instance, users, contact flows) ensures minimal downtime, as only phone numbers—a smaller, quicker-to-deploy component—are handled during recovery. Key takeaway: Pre-provisioning resources in the DR Region reduces recovery steps and RTO.
Answer
The correct answer is: C