Containerd is the fifth project to graduate within the CNCF (Cloud Native Computing Foundation) ecosystem, following Kubernetes, Prometheus, Envoy, and CoreDNS. To move from incubation status to graduation, projects must demonstrate "thriving adoption, diversity, a formal governance process, and a strong commitment to community sustainability and inclusivity".
In spring 2017 Docker has donated containerd to the CNCF after it has spun out the container runtime from the then monolithic Docker software. Since then containerd has become an industry-standard container runtime that acts as the layer between the Docker engine and the OCI runc execution engine.
"After being accepted into CNCF nearly two years ago, containerd continues to see significant momentum – showcasing the demand for foundational container technologies,” said Chris Aniszczyk, CTO of the Cloud Native Computing Foundation. “A lot of work and collaboration from the community went into the development and testing of a stable, core container runtime, the community worked hard to broaden its maintainer and adoption base, on top of going through a external security audit so I’m thrilled to see the project graduate."