The role of a data warehouse in data analytics is to serve as a centralized repository for storing large volumes of structured data from various sources. This data is organized in a way that facilitates easy retrieval and analysis, enabling businesses to gain insights and make informed decisions. Data warehouses support business intelligence (BI) tools by providing a cohesive view of data, making it simpler to identify trends, generate reports, and conduct complex queries. By consolidating data, organizations can improve overall efficiency and accuracy in their analytical processes.