Power View opens up ad hoc reporting for consumers of data. It provides access to data based on PowerPivot workbooks or tabular models deployed to Sql Server Analysis Services 2012.
XTIVIA can help with BI needs related to the tools built into SQL Server 2012 as well as previous versions of SQL Server.
Power View is a feature of SQL Server reporting Services. It provides ad hoc reporting capability. Power View improves on Self-Service BI allowing presentation and data visualization of live data.