Harbor is an open-source, trusted cloud-native registry project that stores, signs, and scans content. For organizations implementing a containerization strategy (such as with HPE Ezmeral or HPE GreenLake for Containers), security is a primary concern. Harbor provides a secure way to manage container images by providing role-based access control, image vulnerability scanning, and image signing to ensure the integrity of the code being deployed. Unlike 'containerd,' which is a container runtime, or 'Spiffe/Spire,' which are focused on identity and authentication between services, Harbor is specifically designed as a registry to manage the lifecycle of container images. It is frequently recommended in HPE container solutions to ensure that only 'clean' and authorized images are utilized in the production environment.