The adoption of Linux by companies is basically due to the following reasons: cost-benefits, security and operation capability. Linux is not implemented to reduce costs only, but also for offering great performance in operations it is intended to, besides being extremely secure.

Linux is not vulnerable to viruses due to its security policy, which stipulates that there must be users with different levels of access to the system. Some of the most critical applications also have a user account to run, so that if there is any problem, only files of this specific software could be affected and not the whole operating system.

Linux features:

• Stability: Linux is known for its stability. It will hardly ever need to reboot the computer. It is even conceivable that some application might freeze, but in the way Linux is designed, it is always possible to finish with this application and continue to use the system;
• Reliability: Because of its stability, there are not many situations in which Linux would stop working, reducing computer's downtime and therefore improving its productivity;
• Scalability: Linux was designed to support from small, minimalist hardware, like a PDA or a cellphone, to a thousand machines cluster, composing a super computer. Thus, Linux is able to run efficiently in more modest hardware configurations;
• Protection and security: Linux operation architecture has been designed with the idea of security, so that the system minimizes any attempt of an invasion, preventing a virus or a Trojan from controlling the whole system.