AWS announces the general availability of multi-Virtual Private Cloud (VPC) elastic network interface (ENI) attachments for Amazon Elastic Cloud Compute (EC2) instances. With this capability, customers can now launch an instance with a primary ENI in one VPC and attach a secondary ENI from another VPC. With multi-VPC ENI attachments, customers can maintain VPC level segregation between networks, while allowing select workloads like centralized appliances and databases to communicate between them.
Source:: Amazon AWS