onDemandBaseCapacity property
The minimum amount of the Auto Scaling group's capacity that must be
fulfilled by On-Demand Instances. This base portion is provisioned first as
your group scales. Defaults to 0 if not specified. If you specify weights
for the instance types in the overrides, set the value of
OnDemandBaseCapacity in terms of the number of capacity units,
and not the number of instances.
Implementation
final int? onDemandBaseCapacity;