AWS ACM Certificates with wildcard domains are harder to manage.
Wildcard domain names (domain names containing wildcards like *) are prohibited.
In AWS Console -
In Terraform -
References:
https://docs.aws.amazon.com/acm/latest/userguide/gs.html
https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/acm_certificate#domain_name