I'd recommend CNCF's training for Kubernetes: https://www.cncf.io/certification/training/ https://www.cncf.io/certification/training/ We offer a free edX cours

I'd recommend CNCF's training for Kubernetes: https://www.cncf.io/certification/training/ https://www.cncf.io/certification/training/ We offer a free edX course and then a paid one that prepares you for the Certified Kubernetes Administrator exam. Disclosure: I am executive director of the CNCF and helped create these courses. P.S. No job will be around forever. You are not doing you or them any favors by trying to maintain them in inefficient roles. But you can invest the resources to bring them with you to the new world.