AIX on big iron. Used for ex nightly batch processing at banks. Lots of horse power for your on prem needs. Moving this kind of horse power to the cloud would

AIX on big iron. Used for ex nightly batch processing at banks. Lots of horse power for your on prem needs. Moving this kind of horse power to the cloud would be insanely expensive and complex for the mid size banks relying on these systems. They shipped these massive boxes out and connected them to massive SANs. You could license the processors later if your workload grew. I spent a year as consultant to big customers building SOA, websites, SSO for whatever they needed. ATM networks with low latency etc.