Every year companies invest huge amount of resources in implementing Customer Relationship Management systems in their organizations. However, only 25% of these companies consider the implementation as a success. In other words, most of these implementations fail completely or do not meet expectations. There are lots of reasons mentioned for these failures such as organizational change issues, lack of IT and business strategy alignment, and company politics. This book studies the major reasons affect CRM systems success in developing countries such as Malaysia and differences between implementation in developing and developed countries.