A data warehouse is a centralized data repository that acts as the endpoint for the Extract, Transform, Load (ETL) process, where you can easily access and mine data for insights. It holds data from various places, such as CRM platforms, transaction systems, operational data stores and other databases.
Cloud-based data warehouses such as Amazon Redshift, Google BigQuery, Microsoft Azure SQL Data Warehouse and Snowflake enable companies to quickly scale up their systems while eliminating the initial infrastructure investments and ongoing system maintenance requirements.