Business marketing refers to any marketing practice performed by an individual or an organization. When one business makes a commercial transaction with another, it is known as business to business or B2B. In this transaction, both the parties have comparable negotiating power. However, large companies can have advantages over smaller companies in terms of commercial and information resources. The principal models in B2B marketing are vertical B2B model and horizontal B2B model. This book is a valuable compilation of topics, ranging from the basic to the most complex theories and principles in business to business marketing. It outlines the problems and applications of business to business marketing in detail. This book is meant for students who are looking for an elaborate reference text in this field.