Communication is present in everyday life, both in business and in the private aspect of life. Without communication in any form, it was not possible to exchange data and information between stakeholders. Compared to the past, it is now easier and faster to communicate thanks to the new technologies available to us (e-mail, video conferences, etc.). Each organization and its members communicate with each other within the organization on a daily basis and with external stakeholders and members of other organizations to exchange information or inform the public about the business and some emerging issues (eg crisis or new product). The paper is divided into four sections. Each unit is essential to the overall work by analyzing the information and data collected during its creation, and the chapters are interconnected. The first, introductory chapter provides basic information about work, the time we live in, how we communicate, and how information is transmitted through the media. The second chapter is entitled Communication and Communication Processes, which defines what communication is and what communication processes corporations use when communicating and informing, and organizational models of corporate communication. The third chapter, titled Marketing and Public Relations in Corporate Communication, covers internal and external corporate communications, public relations, crisis communication, and corporate marketing and publicity. The fourth chapter of the paper is a conclusion that summarizes all of the above in the previous chapters of the paper.