Data Warehousing is a system used for reporting and data analysis, serving as a central repository for integrated data from multiple sources. It enables organizations to consolidate their data, making it easier to analyze and derive insights for decision-making. The architecture of a data warehouse typically includes data extraction, transformation, and loading (ETL) processes, which prepare the data for analysis. This structured approach allows businesses to efficiently manage large volumes of data and perform complex queries, ultimately enhancing their ability to make informed strategic decisions.