A container registry grows into an estate that nobody decided to build, and every control that depends on knowing what is in it becomes approximate. This course treats the registry as the naming and lifecycle authority for a Kubernetes native organisation running fifty or more services. You will build an honest inventory, design a tagging scheme that survives a year, work through the mutable tag problem and what immutable tags and digests cost in practice, decide between rebuilding and repointing at promotion, scope push and pull so a single credential cannot reach the whole estate, write retention that a registry applies without human review, plan for the ways garbage collection fails, design mirrors without inheriting a shadowing risk, place scanning where the evidence is durable, and measure registry age, orphan rate and promotion latency. Every recommendation is written to work as a default or a policy, because a platform team of three cannot review what fifty teams push.
Nothing. Every course, exam, and certificate on the catalog is free — including retakes. All you need is a free Safeguard account.
None. The flagship course, Safeguard Certified Practitioner, is a beginner-level course — basic familiarity with how software is built helps, but every exam question is answerable from the lessons themselves.
You can retake it after a 24-hour cooldown, as many times as you need. Retakes are free, and each attempt draws a fresh random set of questions.
The Safeguard Certified Practitioner credential is valid for 24 months from issue. The expiry date is printed on the certificate and shown live on its public verification page. Renewing means passing the current exam again.
