Easily provision, manage, and deploy public and private SSL/TLS certificates for use with AWS services and your internal connected resources
AWS re:Inforce 2019: Root CA Hierarchies for AWS Certificate Manager (ACM) Private CA (FND320)
How does ACM managed renewal work with certificates that have wildcards and sub-domains?
How can I add certificates for websites to the ELB using AWS Certificate Manager?
AWS Private Certificate Authority
AWS Summit San Francisco 2018 - AWS Certificate Manager Private Certificate Authority