This page contains updates and errata for Web Engineering. Throughout the book, we have provided a wide range of Web references (URLs) to various WebE information sources. We have tried to provide references only for those URLs that are likely to be stable, but the changing nature of the Web means that URLs will change over time. When possible, we'll provide updates and corrections here. If you find an error, please contact us with the page number, the URL, and a correction (if you have one). Thanks.