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CNCF Sandbox vs Incubating vs Graduated: What the Maturity Levels Actually Mean for Your Toolchain
Every week brings another “we built a Kubernetes-native X” announcement. Some of those projects will be running your production clusters in three years; most will be archived repositories with a “no longer maintained” banner. The CNCF maturity level — Sandbox, Incubating, Graduated — is the most widely used shortcut for telling the two apart, and it is also one of the most misread. The labels are not marketing tiers. Each one corresponds to a documented set of criteria that the Technical Oversight Committee (TOC) checks in a due-diligence process, and each one is a floor, not a guarantee. This article…
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