Describes Spot Instance placement.
The Availability Zone. For example, us-east-2a.
us-east-2a
The ID of the Availability Zone. For example, use2-az1.
use2-az1
The name of the placement group.
The tenancy of the instance (if the instance is running in a VPC). An instance with a tenancy of dedicated runs on single-tenant hardware. The host tenancy is not supported for Spot Instances.
dedicated
host