A Decision Support System (DSS) is a computer-based system that helps people evaluate information, compare alternatives, and make informed decisions. It brings together relevant data with analytical methods such as forecasting, modeling, what-if analysis, and optimization. Unlike a system that makes decisions entirely on its own, a DSS is designed to support human judgment by making important factors and possible outcomes easier to assess.
A hospital, for instance, might use a DSS to help allocate beds by considering patient demand, staffing levels, available resources, and expected admissions. In finance, a system could compare investment scenarios using risk and performance data. DSS solutions are commonly associated with business intelligence, predictive analytics, data visualization, optimization, and decision intelligence.