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Executive Support Systems are essentially Executive Information Systems. They’re designed to help top executives stay aware of the organization’s performance and external conditions by presenting high-level, summarized data from various sources in dashboards and exception reports. This focus on strategic, at-a-glance information enables quick interpretation and monitoring of trends, which is why ESS is used interchangeably with Executive Information Systems.

Other labels point to different kinds of systems. Management Information Systems aid middle managers with routine internal reporting, Decision Support Systems provide modeling tools for analyzing options, and Operational Support Systems (when used) deal with day-to-day operations. These distinctions show why ESS/EIS is the term that best matches executive-level, strategic information needs.