Tools/AWS_Certificate_Manager
AWS Certificate Manager (ACM)
Provisions, manages, and auto-renews public/private SSL/TLS certificates for load balancers and CloudFront. Most-used open-source equivalent is cert-manager (Kubernetes-native, automates issuance/renewal via Let's Encrypt or a private CA) — the dominant self-hosted answer to "free, auto-renewing TLS certs" outside AWS.