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Will Route 53-with-Failover Based on CloudWatch Work With A Private API-Gateway REST-API?

If an AWS region goes down (like us-east-1), will a CloudWatch based health check that we want to use for Route 53 Failover fail to function properly if our API-Gateway REST-API is Private? **Background** We wish to fail over if an AWS region is down (hypothetical example: Fail-over from us-east1 to us-east-2). A concern was raised that we may not be able to fail-over from us-east-1 (or whatever region we choose) properly if our Failover Routing Policy is tied to a CloudWatch based solution that is in us-east-1. **Details of our approach which includes fail-over:** * VPC (with Private subnets for some of our items) * Use VPCE to route traffic from a non-AWS system to AWS Route 53 through a public zone. (Has to be a public zone for our needs) * Create CloudWatch metric / alarm. (Are either of those region specific?) * Create AWS Route 53 with Failover routing policy. Uses health check based on the CloudWatch metric / alarm. * Route 53 to Private API-Gateway ( LambdaRestApi in Typescript CDK speak ) * Private API-Gateway to Lambda * And so on.. Lambda to the data it needs. Failover Routing Policy is covered in AWS Developer Guide page [Choosing a routing policy](https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/routing-policy.html) Related: * https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/cloudwatch_architecture.html * https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/monitoring-health-checks.html Related question, but not exact: https://repost.aws/questions/QUVcLK5gUqSxKGondJkrzw0Q/private-zone-route-53-health-checks
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asked a year ago
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