You don’t need to wrestle AWS, Docker, Kubernetes, Terraform, Spark, Aurora, etc… to run a batch job. The kinds of tasks that take integrating multiple different providers and software packages to do in cloud architecture are OS-level features on mainframe. It’s less flexible and more expensive, but an order less accidental complexity.
IBM is a dinosaur company that exists because of embedded connections in government, banking, and defense. They charge 100x the going rate for ancient tech that’s insecure and an absolute nightmare to develop for.
The sooner everyone drops anything associated with IBM or Oracle, the better for everyone. Absolute cancers.
