In this chapter, you learned how to insert Web parts and Web part zones on SharePoint Web pages. You also learned how to insert and use SharePoint controls available in SharePoint Designer.
Web parts provide the user interface used to perform operations on a SharePoint site. They act as placeholders on the Web page and interact with the internal data sources to present information to users. For example, the ListViewWebPart provides the interface to view items in a list.
Most of the Web part configuration can be performed by using the SharePoint site user interface itself. However, SharePoint Designer provides an interface similar to SharePoint for inserting Web parts and working with Web part properties. It does so to avoid randomization for site designers. Thus, they don't need to switch from the design surface to insert and modify Web parts.