Complex Event Processing (CEP) is a technology that enables the real-time analysis of large volumes of data from various sources. It identifies patterns and trends by processing events as they occur, allowing organizations to respond quickly to changing conditions. This is particularly useful in fields like finance, telecommunications, and security. CEP systems use algorithms to filter, aggregate, and correlate data from multiple streams. By doing so, they can detect significant events or anomalies, providing insights that help businesses make informed decisions. This capability enhances operational efficiency and improves overall responsiveness to dynamic environments.