Amazon EC2 currently supports a variety of operating systems including: Amazon Linux, Ubuntu, Windows Server, Red Hat Enterprise Linux, SUSE Linux Enterprise Server, Fedora, Debian, CentOS, Gentoo Linux, Oracle Linux, and FreeBSD.
Details
Windows Server 2016 Base, Nano, with Containers
Windows 2012R2
Windows 2012
Windows 2008R2
Windows 2008, 32 bits en 64 bits
Windows 2003, 32 bits en 64 bits