"Microsoft PowerPivot enables powerful self-service ad-hoc
analysis of extremely large data sets all within the comfortable and easy to use Excel 2010 environment. You can perform server-less, in-depth, multidimensional, OLAP-style
and columnar analysis, as well as create your own column and table-focussed calculations. Acquiring data from
external sources, including the amazing ability to "parse" existing graphical and textual reports generated by other systems (such as SAP) has never been easier."