High availability cluster and shared Amazon VPC
Amazon VPC sharing enables you to share subnets with other Amazon accounts within the same Amazon Organization. Amazon EC2 instances can be deployed using the subnets of the shared Amazon VPC. For more information, see Amazon VPC sharing blog
This guide assumes that an Amazon Organization is already setup and that Amazon VPC subnets have been shared between Amazon accounts using the Amazon RAM. For more details, see Create a resource share
The following image shows a sample architecture design.

Note
Further in this guide, we refer to the Amazon account that owns the Amazon VPC as the Amazon VPC account and to the account using the Amazon VPC where the cluster nodes are going to be deployed as the Cluster account.