By default, each cluster creates the following instances:
These instance type counts are within a new account’s default limit. To deploy
more worker nodes, enable autoscaling, deploy large workloads, or use a
different instance type, review your account limits to ensure that your cluster
can deploy the machines that you need.
In most regions, the bootstrap and worker machines uses an
and the master machines use
m4.xlarge instances. In some regions, including
all regions that do not support these instance types,
instances are used instead.