Customer relationship management or CRM is a set of practices that enable companies to analyze customer-company interaction with a view to retain customers, increase sales and discover potential customers. CRM strategies involve data analysis on various aspects of a customer's choices, tastes and preferences. It also involves in-depth research on the various points and nature of interaction between customer and company such as websites, telephone calls, live chats, emails, etc. CRM software compile customer data into databases. Call centers, social media, contact center automation, etc. are all aspects of customer relationship management. Most of the topics introduced in this book cover new techniques and the applications of customer relationship management. It will provide comprehensive knowledge to the readers.