Spot instances are cheap but they can be terminated by AWS with 2 minutes notice. However, MaxSpotter prediction algorithms continously measures and predicts termination likelihood. Before the termination notice by AWS, it auto replaces existing spot instances with new ones for service continuity.
You don't need to worry about your existing servers. MaxSpotter supports opt-in or opt-out mode. MaxSpotter converts your existing servers in AutoScaling groups within minutes gracefully.
Any workload on the cloud can be run on cheap spot servers, if your servers are not single point of failures. This is our philosophy.
We support AWS for the moment, however Azure and GCP are on their way.