Is a data lake useful if we already have a traditional DWH?

But, a data lake vs dwh comparison doesn't always mean that you need to replace one platform with the other. A traditional DWH can process structured reporting and a data lake can accommodate a large amount of unstructured data such as logs, files, etc. This infrastructure could be beneficial if an organization is looking to move to more advanced analytics or machine learning. However, before adding another platform, it is important to take into consideration the added cost and management responsibilities. There is a need to have a clear use case, and not just build a data lake because it is in vogue.