Data aggregation is the process of combining and summarizing various data sets or sources to produce a single, unified view or analysis. This can involve collecting and merging data from multiple sources, such as databases, spreadsheets, or sensor networks, to create a comprehensive dataset that can be used for analysis or reporting. Data aggregation is commonly used in data mining, business intelligence, and market research to better understand trends, patterns, and insights within the data. It helps organizations make informed decisions and derive meaningful insights from large and complex data sets.