Azure Data Lake Storage Gen2 is a highly scalable, performant, and cost-effective data lake solution for big data analytics. Data Lake Storage combines the power of a high-performance file system with massive scale and economy to help you speed your time to insight. It extends Azure Blob Storage capabilities, and is optimized for analytics workloads. Store data once, and access via existing Blob Storage and HDFS-compliant file system interfaces with no programming changes or data copying. Azure Data Lake Storage is compliant with regional data management requirements.
Source: Azure Roadmap