VMware Cloud on AWS provides different host types for use in your SDDC.

A given cluster in your SDDC must contain hosts of the same type.

Some host types might not be available within a particular region or availability zone.

The I3 host type is the default host type. I3 hosts have 36 cores, 512GiB RAM, and 10.37TiB raw storage capacity per host.
The I3en host type is optimized for data-intensive workloads. I3en hosts have 96 logical cores, 768GiB RAM, and approximately 45.84 TiB raw storage capacity per host. Single-host SDDCs cannot contain the I3en host type.