AWS Cloud Map simplifies service discovery with optional parameters
You can now discover endpoints registered in AWS Cloud Map with optional parameters that filter the returned results only when there is a matching custom attribute. AWS Cloud Map is a cloud resource discovery service. Using AWS Cloud Map, you can define custom names for your application resources, such as Amazon EC2 instances, Amazon ECS tasks, Amazon S3 buckets, or any other cloud resource. Your application can then discover the location and metadata of cloud resources associated with these custom names via AWS SDK or by making authenticated API calls.
Source:: Amazon AWS