This template creates a service based on a public DNS namespace. The service includes settings for Amazon Route 53 A and AAAA records with a routing policy of WEIGHTED. It also includes a Route 53 health check.

This template creates an HTTP namespace named `example-namespace` with a description of 'AWS Cloud Map HTTP namespace for resources for example.com website'.

This template creates an AWS::ServiceDiscovery::Instance resource that provides IPv4 and IPv6 IP addresses for an instance. The instance is registered using the service ID `srv-e4anhexample0004` and has an instance ID of `i-abcd1234`.

This template creates a private DNS namespace based on DNS, which is visible only inside a specified Amazon VPC. The namespace defines your service naming scheme. For example, if you name your namespace `example.com` and name your service `backend`, the resulting DNS name for the service is `backend.example.com`. Service instances that are registered using a private DNS namespace can be discovered using either a `DiscoverInstances` request or using DNS. For the current quota on the number of namespaces that you can create using the same AWS account, see AWS Cloud Map quotas in the _AWS Cloud Map Developer Guide_. The template creates a private DNS namespace named `private-example.com` with a description, VPC ID, and DNS properties.

This template creates a public DNS namespace for a website with the name 'example.com'. The namespace is used to define the service naming scheme, allowing instances to be discovered using DNS. The 'SOA' property is set with a TTL of 100.