Certifications expire, and that's the point
The wall does not need to be full. It needs to be true.
An expired certification is no longer valid, and that is correct. It is not a bug in how vendors run their programs, it is the reason the programs work. I have earned eleven certifications across Kubernetes, Terraform, AWS, Red Hat, Dynatrace, and GitLab. Some are current. Some have lapsed and are not on my renewal list. I am at peace with that, and anyone who treats their wall of badges as a permanent inventory is missing what the badges were supposed to mean.
Three years is a long time in this industry. In three years buttons move, defaults flip, services get renamed or absorbed into something else, deprecation notices stack up, and entire features quietly stop being the recommended path. A 2022 exam for any major cloud is testing for a console that no longer exists in the form the exam described. CLI flags change. The IAM model gets a new layer. The "best practice" answer for how to lay out a cluster, a pipeline, or a network gets reshuffled. If a certification did not expire, it would eventually start certifying knowledge of a product that has been gone for years. Expiry is the mechanism that keeps the credential honest.
There is a real nuance underneath that. Some of what you learn studying for a cert is permanent. The shape of how IAM and trust boundaries work, how a deployment pipeline is supposed to flow, how DNS and load balancers actually resolve traffic, what a control plane is doing when it reconciles state — that knowledge is transferable across vendors and survives whatever rebrand happens next. If you sat with the material long enough to internalize the model, you keep the model. The badge expires, the understanding does not.
But the foundational-knowledge defense only works if you actually learned the topic. The failure mode the renewal policy was designed to catch is the exam-prep anti-pattern: bottling up the question bank, drilling answers until you can pass, walking out with the certificate, and dumping the questions a week later. That person has the badge and not the skill. The model in their head is the test, not the technology. When the platform changes, they have nothing to update — there was nothing there to begin with.
The economics of renewal are also worth being honest about. I have a GitLab CI/CD Associate from 2021 and three GitLab specialist certifications from 2022. I am not currently working in GitLab — my day-to-day is Kubernetes, Terraform, and AWS, and the study time I have goes into things like KCNA and HCTA 004. Letting the GitLab certs lapse is not a failure, it is a signal. The badge is supposed to be evidence of recent grounding in the tool. If the tool is not in my recent work, the badge is not telling the truth anymore, and renewing it would just be paying to keep a misleading sticker on my profile.
This is where the framing matters to me. I say I have earned eleven certifications, not that I hold eleven active ones, because both statements are true and only one is interesting. Earning is permanent — it is a record of the work you did at the time, and an expired credential still proves you sat down and learned the material in that year. What it does not prove is that you are still current today. That is what renewal exists to demonstrate, and pretending an old badge does both jobs is dishonest about what the credential is for.
So the discipline is simple. If a certification maps to the work I am doing now, I renew it; the cost of staying current is part of the job. If it does not, I let it expire honestly and put the hours into the one that does. The wall does not need to be full. It needs to be true.