I was really looking to take an informal poll to see how common containerization is in production, but now that you've asked, I guess my questions revolve around the technology stack:

Are you using kubernetes for orchestration?

Is there automation managing the orchestration configurations like Puppet, Chef, Ansible, Saltstack?

Can I assume this is being carried out through virtualization, if so, what kind of hypervisor is in use?

Is this on premise or in the cloud?

More questions to come, I'm sure and thanks in advance for indulging my curiosity!