This book was written to introduce you to the features and capabilities that ASP.NET 4 offers, as well as to give you an explanation of the foundation that ASP.NET provides. We assume you have a general understanding of Web technologies, such as previous versions of ASP.NET, Active Server Pages 2.03.0, or JavaServer Pages. If you understand the basics of Web programming, you should not have much trouble following along with this book's content.