AWS Private CA is an AWS service that can setup and manage private CAs, as well as issue private certificates. cert-manager is a Kubernetes add-on to automate the management and issuance of TLS certificates from various issuing sources. It will ensure certificates are valid, updated periodically and attempt to renew certificates at an appropriate time before expiry. This project acts as an addon (see https://cert-manager.io/docs/configuration/external/) to cert-manager that signs off certificate requests using AWS Private CA.
