Understanding Excess Cloud Capacity: Amazon EC2 Spot Instances vs. Azure Spot VMs vs. Google Spot VMs
Spot instances (also called spot virtual machines, or VMs) are transforming how people consume public cloud services. Cloud providers offer their excess cloud capacity as these short-lived instances for a very low cost compared to on-demand or reserved instances. The top three cloud providers — Amazon Web Services (AWS), Microsoft Azure, and Google Cloud — offer spot instances to their users.