Software used to control the computer and develop and run applications. It includes programs such as operating systems, database managers, compilers, Web servers, router operating systems and control ...

As system engineers explore therequirements for a system and begin to define a high-levelsolution, they face a number of challenges, including defining thesystem context and top-level structure; ...

A system software component that is external to the operating system kernel. If the phrase is used to refer to the operating system itself, it is redundant because an operating system "is" software.