Field Notes: Using Amazon VPC Prefixes with Security Groups

Recently during a Customer engagement I encountered what seemed to be a fairly straightforward issues with a Security Group that was running into a service quota isssue with the number of Inbound or outbound rules per security group.

Background to the Issue

To give a little bit of context, this particulary security group was associated with a couple of Amazon EC2 Instances that were running Microsoft Windows Server 2019 and performing the function of Active Directory Domain Controllers that were being self-managed by the Customer.