John M. Wargo has more than twenty years of experience designing and developing enterprise applications. For the past eight years, he has focused on mobile development and mobile development tools. His books include Apache Cordova API Cookbook, Apache Cordova 3 Programming, PhoneGap Essentials, and Blackberry Development Fundamentals (all from Addison-Wesley). Wargo is a Product Manager at SAP, focusing on the SAP Mobile Platform. His responsibilities include the Kapsel SDK; SAP's suite of Apache Cordova enterprise plugins; and the SAP Fiori Client, a Cordova app for Android, iOS, and, soon, Microsoft Windows.