ENA is a custom networking interface designed and built by AWS to provide high throughput, consistently low latency, improved packet per second (PPS) performance and scalability as available network bandwidth increases without needing to install new drivers or requiring configuration updates. ENA driver is installed in the latest Amazon Machine Images (AMIs) for the following operating systems: Amazon Linux, Ubuntu 14.04 and 16.04, RHEL 7.4, SLES 12, Windows Server 2008R2, 2012, 2012R2 and 2016. ENA Linux driver source code is also available on Github.com for developers to integrate in their AMIs.