| Systems Engineering is a top-down, life-cycle approach to the design, development, and deployment of large-scale systems, processes, or operations to meet the effective needs of users and stakeholders in a cost-effective, high-quality way. Systems Engineering typically involves an interdisciplinary approach and means to enable the realization of successful systems.
It focuses on defining customer needs and required functionality early in the development cycle, documenting requirements, then proceeding with design synthesis and system validation while considering the complete problem. | 
