Insights for ArcGIS is a new spatial analytics experience that brings fast, powerful data exploration and discovery to everyone in the enterprise. It extends and complements the ArcGIS platform as a “system of insight”. Insights blends spatial and non-spatial data, so you’re free to bring in and immediately start to work with enterprise databases such as SQL Server and SAP HANA, geodatabases, Excel spreadsheets, and any data that can be brought into your ArcGIS system as a feature layer
Named users of ArcGIS can view results of Insights analysis shared with them. To perform analysis in Insights, users need to purchase a premium subscription in addition to the ArcGIS Named user license.
For more information you can check here: http://www.esri.com/products/arcgis-capabilities/insights