AWS Cloud Discovery Service EndpointIssue If blanket allowance for “*.amazonaws.com” cannot be provided for AWS Cloud Discovery, the list of exact URL endpoints need to be whitelisted to run the AWS Cloud Discovery. Release Related to AWS Cloud Discovery release Resolution Use the list in below AWS documentation for service endpoints:https://docs.aws.amazon.com/general/latest/gr/ec2-service.html Refer to the attached file "aws-general.pdf" (downloaded from https://docs.aws.amazon.com/general/latest/gr/rande.html) for the same information at page 125.There's one more URL to add:https://ec2.amazonaws.comThis should cover the URLs that AWS cloud discovery need. Related Links Amazon Documentation: https://docs.aws.amazon.com/general/latest/gr/rande.html https://docs.aws.amazon.com/general/latest/gr/aws-service-information.html https://docs.aws.amazon.com/general/latest/gr/ec2-service.html