Book excerpt: Hardly anybody outside a company knows its products and processes better than its suppliers. Research confirms that intensive integration of suppliers in the value creation process positively influences the success of the company, particularly in highly competitive industries. This is a result of the progressing reduction in the depth of value creation of manufacturers and the increasing transfer of know-how towards suppliers. In multilevel business-to-business relationships, suppliers often have the best or the only access and comprehensive knowledge about the end users. Therefore, suppliers determine the scope of possible innovations, which most companies do not actively use. This unique volume provides a comprehensive overview of theories, concepts and especially empirical results on open innovation and the integration of suppliers. For this, authors from all over the world present their latest research results offering fascinating insights into collaborative approaches with suppliers.