This paper discusses the key aspects of business ethics that in today's global world has become an indispensable part of business practice and a precondition for achieving business success not only in the short bit also in the long term. Another focus is on the concept of ethics, its application in business areas where ethics act, which is its task, and which are the virtues of business ethics. Business ethics receives strategic importance because the organization creates a system of governance based on ethical principles which enables the organization to respond to the quality demands of all stakeholders - customers, employees, shareholders, or those interest groups that are indirectly related to the organization - the community and the environment, or society as a whole. Successful organizations will be those that do not separate ethics from profitability but those that successfully coordinate both in their operations. The paper also analyzes how to make an ethical decision, which elements affect ethical decision-making and how organizations today strive to incorporate business ethics in their business, through the establishment of codes of conduct to socially responsible behavior. It will also display codes of conduct of some companies and they will be linked to the company's operations in order to display the importance of ethical principles in business. We will notice that the companies that have the highest level of ethics also operate the best.