k8s/Spot Instances

Discounted VM's that the cloud provider can reclaim in minutes.
This unreliability makes them only suitable for workloads that can tolerate disruption.
k8s(kubernetes) can use some advanced scheduling and workload mobility to make use of spot instances.
Example of using AWS spot and achieving high availability
- https://medium.com/riskified-technology/run-kubernetes-on-aws-ec2-spot-instances-with-zero-downtime-f7327a95dea