# cert-manager (/docs/runtime/components/cert-manager)



Component Category [#component-category]

Access and security / certificate management

Component Description [#component-description]

cert-manager automates the issuance, renewal, and management of TLS certificates in Kubernetes.

Why It Is Used [#why-it-is-used]

In BullSequana AI Runtime, cert-manager helps secure platform endpoints with managed certificates and reduces the operational burden of handling certificate lifecycles manually. This is important for ingress exposure, trusted service endpoints, and the general security posture of a production platform.

Learn More [#learn-more]

* [cert-manager documentation](https://cert-manager.io/docs/)
* [cert-manager/cert-manager on GitHub](https://github.com/cert-manager/cert-manager)

Interacts With [#interacts-with]

* `NGINX` and `APISIX`, to secure exposed endpoints with managed certificates.
* `External DNS`, because certificate issuance depends on the same DNS and domain setup.
* `MinIO` operator and tenant resources, which use cert-manager-managed certificates in the platform manifests.