Yes. We have production deployments of IncludeOS. The use case was network functions like firewalls and load balancers. I think the perception of Unikernels as

Yes. We have production deployments of IncludeOS. The use case was network functions like firewalls and load balancers. I think the perception of Unikernels as something that is suppose to replace containers is a bit artificial. They have a much stronger appeal in replacing Linux where Linux struggles. So CPU-based IoT devices where Linux security is a problem, serverless architectures where Unikernel boot-times of 5-10ms can provide more elasticity or network functions where the GNU/Linux footprint is significant. Certain containers could be a unikernel case down the line when the tooling improves. Once you can do "npm unikernel" and it spits out a bootable node-app might make node-based Unikernels attractive. But nobody is there yet, AFAIK.