Answer
CRI defines gRPC APIs for sandboxing, lifecycle, and images; runtimes implement CRI decoupling kubelet.
Quick Answer
CRI (Container Runtime Interface) is a standard gRPC API between kubelet and the container runtime. Any runtime implementing CRI (containerd, CRI-O) can be used. Kubernetes communicates via CRI calls (RunPodSandbox, CreateContainer, StartContainer) — the runtime handles the implementation details. This lets Kubernetes run on any OCI-compatible runtime without code changes.
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SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ