SAP HANA is an in-memory database and application platform developed by SAP SE for processing high volumes of data in real-time. It provides features for data storage, data processing, and application development in a single platform. SAP HANA uses in-memory computing, columnar storage, and parallel processing techniques to deliver high performance, scalability, and real-time analytics capabilities for businesses. It is used for running SAP applications, data warehousing, business intelligence, and advanced analytics solutions.