Book excerpt: Shows developers how to harness the power of services such as Google, eBay, PayPal, and Amazon.com from within an application, whether it is Web-based, Windows-based, or even a Microsoft Office application After a quick review of the basics, readers will dive into more advanced techniques such as calling the APIs from mobile devices, Office VBA programs, Windows Forms and Web applications, and even how to integrate the various APIs together for a complete solution Veteran Wrox author Denise Gosnell skillfully guides readers through the ins and outs of the various services, the anatomy of an API query, which features are available via the APIs, and how to get results from their own applicationsReaders will build two fully functional applications to apply what they have learned-one a Windows program, the other a Web application