This is a good book, but you must pay attention to its aims. If you are a programmer, interested in deepen XML details and implementation tips, this is not your book. But if you are a consultant, a project leader, a software designer, an IT manager, or if you are a developer but you want only a first taste on XML, the book is good for you. It's short, an appreciable quality for people who want to learn something but don't have too much time. The author gives a precise and concise information on XML and DTD structure, in two different chapters. The attention is on the conceptual models, and this really helps in understanding why XML is so promising in Web and non-Web information exchange applications. A (too much short) chapter is devoted to an overview on related standards (Namespaces, XLink, XSL, XML Schema...). This chapter is well structured but it's only an overview: some more applied information could have been given without betraying the aim of the book. This applies also to the fourth chapter, on XML related tools. Three chapters on people and processes involved in XML migration, and on a dozen enterprise applications, give useful suggestions not only to managers, but also to analysts, designers, senior developers. Related to its dimensions, the book is quite expensive. Paolo Davoli