> For the complete documentation index, see [llms.txt](https://docs.serverlessapigateway.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.serverlessapigateway.com/glossary/d/data-warehousing.md).

# Data Warehousing

Data warehousing is the process of collecting, storing, and managing large volumes of structured data from multiple sources in a centralized repository optimized for analysis and reporting. A data warehouse organizes data into schemas and tables designed for fast query performance, typically using a columnar storage format.

Data warehouses differ from operational databases in that they are optimized for read-heavy analytical queries rather than transactional workloads. Common data warehouse solutions include Snowflake, Amazon Redshift, Google BigQuery, and Clickhouse. Data is typically loaded into a warehouse through ETL (Extract, Transform, Load) or ELT pipelines.

For API management, data warehousing provides a foundation for business intelligence around API usage. Aggregated metrics such as request counts, error rates, latency distributions, and consumer behavior can be queried efficiently. This data helps teams make informed decisions about API versioning, deprecation, capacity planning, and pricing.


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