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What the book covers: The book will show programmers - new and seasoned - how to access existing web services to get, post, and modify data while developing iOS apps securely. The book will focus on the various options for apps with detailed sample programs for each. The sample programs will include, as appropriate:§Xcode projects with complete source code for each example iOS client app.§Server code to create the web services living in the cloud. Some servers will be written using Ruby on Rails. Others will be based on using Amazon or Google back-ends.§Desktop browser-based clients back-ends.§Connectivity lag time§Choosing data formats,§Secure data transfer§Identifying the iOS client, using iOS device ID, user names, or user name/password.§Server metrics and analytics