It depends on which scaffolding you choose, and what you need in you project.
It means that the Dynamic Data framework will auto-generate a set of routes based on the table names in a data model (e.g. a Linq to SQL data context), and a predefined set of operations (essentially CRUD). E.g: When you visit http://example.com/Products/Details.aspx, where "Products" is the name of a table in your data model, the framework will auto-generate a details page for displaying product details. The generated pages can be customized by providing partial views named according to a convention based on the naming of e.g. columns in the data model.