Sun Microsystems, Inc. is an American vendor founded in 1982 and headquartered in Santa Clara, California. Company is an innovative industry leader in servers, storage, software, and services with a 100 percent focus on network computing. Nearly a quarter century ago, Sun was founded with one driving vision: The Network is the Computer, a vision for connecting everyone, no matter where they are. 

Sun's products include computer servers and workstations based on its own SPARC and AMD's Opteron processors, the Solaris operating system, the NFS network file system, and the Java platform.

All Sun systems have been based on Unix systems. Recently, Sun has offered Linux-based desktop software called Java Desktop System for use both on x86 hardware and on Sun's Sun Ray thin-client systems. It has also announced plans to supply its Java Enterprise System on Linux. It has already released its newest OS, Solaris 10.

The Java platform, developed at Sun in the early-1990s, was developed with the objective of allowing programs to function regardless of the device they were used on, sparking the slogan "Write once, run everywhere". Since its introduction in late 1995, it has become one of the world's most popular programming languages.

Sun can help customers solve their most pressing business problems by leveraging IT best practices gleaned from over two decades of experience working with the top companies worldwide. Some of outstanding solutions of Sun are: building a standards-based, flexible and efficient software infrastructure, reducing cost and complexity by consolidating customers’ data center… Customers always believe in the quality of IT products supported by Sun.

In 2006, ITC JSC provided E6900 SUN Cluster Server for Viettel Coporation billing system. This is the biggest and modernest cluster sever in series of SUN servers, and also the first application in Vietnam. In 2007 we are selected as First Tier Partner and Systems Integrator of SUN, marking the improvement in mutual relationship.