→ Data Warehouse
→ Data Lakehouse
→ Data Mesh

A Data Lake is a large digital storage space where you can keep all kinds of data: structured (like spreadsheets), semi-structured (like JSON files), and unstructured (like images or documents, PDFs). Unlike traditional databases that need everything organized first, a data lake lets you store information as it is, and organize or analyze it later when needed. It’s great for flexibility and working with very large volumes of data.

Data Lakes typically offer cheaper storage compared to Data Warehouses.