This teaching note summarizes the main issues regaring the core contents of the Business Organization course. For each topic, the note produces a list of key messages and ideas to retain. The topics covered are the following: Markets, organizations and knowledge; Incentive conflicets and contracts; Economics of strategy; Vertical Integration and Outsourcing; Organizational Architecture and the Level of Empowerment; Incentive Compensation and Performance Evaluation; Ethics and Organizational Architecture and Corporate Governance.