What is a Modern Data Stack?

A data warehouse is a central repository for all of an organization's data. It is designed to bring together data from multiple sources and make it available to businesses for analysis and reporting. Data warehouses are used by organizations to gain insights and make better decisions. This data is typically stored in a structured format and used for reporting and analysis. The data in a data warehouse is often sourced from multiple sources, such as transactional systems, log files, and external data sources. The data is then transformed and loaded into a warehouse for analysis.

A data lake is a repository of data from different sources that is stored in its original, raw format. Like data warehouses, data lakes store large amounts of historic and current data. What sets data lakes apart is their ability to store data in a variety of formats, including JSON, BSON, CSV, TSV, Avro, ORC, and Parquet.