AutomatedRegionValidationinAWSSDKProvider

Reference: AWS SDK for Go API Documentation

The current implementation maintains strict matching for the ValidateRegion() function. However, it can be relaxed to include regular expression (regexp) matching as shown below:

if _, isValidRegion := endpoints.PartitionForRegion(endpoints.DefaultPartitions(), c.Region); isValidRegion {
    return nil
}

This change would allow more flexible region validation while maintaining the integrity of the provider.

The original issue is sourced from the open-source project: hashicorp/terraform-provider-aws.

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