A Data Historian is a specialized software application used to collect, store, and analyze time-series data from various sources, such as industrial equipment and sensors. It helps organizations track performance over time, enabling them to make informed decisions based on historical trends and patterns. These systems are commonly used in industries like manufacturing, energy, and utilities, where monitoring processes is crucial. By integrating with other systems, a Data Historian can provide valuable insights into operational efficiency, maintenance needs, and overall productivity, ultimately supporting better management of resources and processes.