Amazon Elastic Kubernetes Service (EKS) now allows running more pods per windows node using IPv4 prefix delegation mode for Windows containers. Prefix delegation mode expands the number of secondary IPv4 addresses which could be assigned to the Elastic Network Interface (ENI) by up to 16x. With this feature, customers can run up to 250 pods on a single Windows Server node, depending upon the chosen instance type and size.
Source:: Amazon AWS