SharePoint Foundation comes packed with many Web Parts that can be used with little configuration. They should meet most of your business requirements, but inevitably, at some point you will want to create your own.
For more information about the out-of-the-box Web Parts that are available with SharePoint Foundation, read Chapter 7.
One of the big differences for Web Parts in SharePoint 2010 is the manner in which they are added to pages. In SharePoint 2007, Web Parts could only be added by using the browser in Web Part Zones. In SharePoint Foundation 2010, using the browser and wiki pages, Web Parts can be added outside of a Web Part zone into a content zone on the page along with text and images.
For more ...