Big data vs data warehousing: what’s the difference and which do you need?

Data warehousing gathers, stores, and structures cleaned, organised business data to answer specific analytical questions and support reporting, while big data technologies handle massive, fast, or unstructured data streams that require advanced analysis, real-time handling, or don’t map to clear tables. Choose warehousing for BI and reporting with a managed schema, and big data for large, varied data at volume and speed, often in analytics or data science apps.