A web part is a modular component in EPM Live (SharePoint) that can be placed on any page. The web part is the basic building block to display data.
Most of the pages in EPM Live contain multiple web parts, such as the Community Homepages, Dashboards, etc. A web part may contain data for lists, libraries, links, charts, etc. EPM Live has a number of custom web parts that extend the functionality of SharePoint web parts.