Spot instances are cheap but they can be terminated by AWS with 2 minutes notice. MaxSpotter 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. It can convert your existing servers in AutoScaling groups within minutes gracefully.
MaxSpotter Dashboar provides detailed statistics about your spot instances, potential, actual costs and savings