Twilio makes it simple to integrate telephony - both phone calls as well as SMS and MMS messages - into your code without expensive hardware or manual setup.This is an in-depth guide to working with the Twilio platform from start to finish, making it easy for any developer to integrate phone calls and SMS messages into their code.Packed with lots of code examples, this book gets you up and running with Twilio in no time, enabling you to work with messages and calls in a variety of different ways. You'll not only learn how to build basic applications using Twilio, but also how to exploit Twilio's most powerful features, keep your Twilio integration secure, and test and debug the application thoroughly.This book is the perfect guide from your first steps working with Twilio right up to becoming an expert, giving you all the best practices and top tips you need to build reliable and powerful telephony applications.