Spotinst is not a cloud provider, we manage the provisioning of servers for your own cloud account. Define your launch specifications like AMI, Security Groups, ELBs, Roles, etc and we will launch these servers in your own VPC in your own account. There’s no difference in performance between on-demand instances and spot instances.
You can create a heterogeneous cluster of different instances types. Mix and match generations or go up a size. Simply determine what the minimum requirements are for your application servers and go up from there. Newer gen or larger size instances can actually cost less money due to Spot market conditions. We’ll automatically determine the best price and availability and provision these servers for you automatically.
Selecting multiple availability zones will not only provide better availability, it will also increase the number of markets available to you for Spot availability as well.