Best ROI certs I have seen move the needle:
1. AWS Solutions Architect Associate (~$300 exam) — opens senior cloud roles fast 2. Google Professional Data Engineer — recognized across enterprise 3. Certified Kubernetes Administrator (CKA) — ~$395, still undersupplied 4. CompTIA Security+ — DoD 8570 compliant, government contractor gold 5. Terraform Associate — infra-as-code is table stakes now
The market for k8s ops is genuinely undersupplied. Surprised more people are not going straight for CKA.