Around 300,000 downloads and multiple uses as a textbook by colleagues at other universities: "The Social Media Cycle" by Prof. Dr. Alexander Decker was a great success. Since a lot has happened in the social media landscape since its publication, the book has now appeared in its second edition. In addition to updates on all aspects of social media platforms, there is also a philosophical look at the topic of social media. But the core is and remains the ten-step process of the social media cycle, which companies can use to systematically build a social media presence step by step.