A data warehouse (or enterprise data warehouse) is a repository for vast amounts of data collected and integrated from numerous sources. Because firms rely on this data for analytics or reporting, the data must be uniformly prepared and easily available; these are the characteristics that constitute data warehousing and make it crucial for businesses today. A data warehouse begins with the collection of data from internal and external sources. Typically, information is taken from the source, transformed into high-quality data, and then put into a data warehouse as part of an extract, transform, and load (ETL) process. Regularly, businesses perform this process to maintain data current and ready for the next step. Evaluate how a data warehouse can assist a larger organisation in enhancing their company data analytics, boosting income, and competing more strategically on the market