(1) Software that manages computer systems in an enterprise, which may include any and all of the following functions: software distribution and upgrading, user profile management, version control, backup and recovery, printer spooling, job scheduling, virus protection and performance and capacity planning. Depending on organizational philosophy, systems management may include network management or come under it. See network management and configuration management.
(2) The management of systems development, which includes systems analysis & design, application development and implementation. See system development life cycle.
(3) The management of the computer systems within an organization. Used in this context, the term may refer to the entire IT organization or just to datacenter management.