Features:

Ubuntu Server Edition

Ubuntu Server Edition is loaded with features to simplify, optimize and secure your servers.

Kernel »
Ubuntu Server Edition includes a specially configured kernel to match the requirements of all common workloads typically found on a server so that you get the most out of your hardware while maintaining optimal power consumption.
Authentication »
Whether you are running Windows, Unix, MacOSX or other flavors of Unix, Ubuntu Server Edition comes with all the tools to easily integrate with your current user management systems, allowing your clients to seamlessly authenticate, share documents and access services.
Deployments »
Ubuntu, whether it is used for the desktop or on servers, provides all the tools to automate the official installer and therefore allow for reproducible, hardware-independent deployment scenarios
 
Web server »
Whether you want to use PHP, Perl, Java, Ruby or Python, together with Apache and MySQL, Postgresql, DB2 or Oracle, Ubuntu Server Edition can be ready within minutes to start serving your dynamic web pages.
Mail server »
Ubuntu's mail server is composed of two of the most renowned open source packages: Postfix and Dovecot. Postix is a mail transfer agent, or in other words, the software that routes and delivers emails. Dovecot is the agent that talks with email software using IMAP or POP3 protocols.
Infrastructure »
Ubuntu Server Edition provides you with most of the tools you need in order to create your network infrastructure. Along with Linux built-in capacity to route networks, the following tools allow you to add the key services to create and maintain your network.
 
Power management »
Power management features allow you to make your system resilient and reduce your energy bill.
Security »
Ubuntu's Security team works together with Debian and other leading vendors security teams to make sure Ubuntu remains as secure as possible when issues are discovered and publishes notices when patches are released.
AppArmor »
Software with no bugs is something that we have always dreamed of, but that we'll never see. Unfortunately some of these bugs can lead to exploits, therefore endangering the whole system the software is running on.
 
JeOS »
Ubuntu Server Edition JeOS (pronounced "Juice") is an efficient variant of our server operating system, configured specifically for virtual appliances.
File & Print »
Sharing files with Linux, Windows (r) and Mac (r) is made as simple as ticking a box in the installation process.