I bought this book with the intention of learning about the features of the VMWare SDK and Virtual Infrastructure/ESX Servers scriptability/programmability. This book has some good information on programming the rest of VMWare's product line: GSX Server and Workstation, and seems to be targeted more towards the application developer/ISV who is seeking to automate their test/build cycle using VMWare products than the Network Engineer who is using VMWare to virtualize an enterprise's IT Environment. It covers a lot of information that seems out of place in a programming book, such as a chapter on creating a 'gold' image to use as a template for imaging systems, and information on basic VMWare server/workstation setup and configuration. If that is what you are looking for, then this book is for you. If you are trying to use VMWare's product line to virtualize your IT Infrastructure, then keep looking.