This is an official CentOS 7.4.1708 x86_64 image built with a minimal configuration file and is for HVM instance types only. The image contains only enough software packages to run in Amazon Web Services, enable the SSH server, and allow users to log in. It contains software packages that are updated at certain points in time to include important security updates. The image already contains the Linux kernel driver for the Elastic Network Adapter (ENA), see https://github.com/amzn/amzn-drivers for details. David Duncan is Amazon Web Services' partner solutions architect. He is also a Red Hat Certified Architect and Red Hat Certified Engineer. He works closely with open source partners to make more open source software support Amazon EC2. David Duncan is also a member of the CentOS community and has been involved in CentOS development and community development and management.