Background: Global services, particularly professional services, have become one of the world economy’s fastest growing sectors and professionals are becoming increasingly important as a result of this shift. Inherent differences, characterizing professional services, result in a scarcity of empirical evidence on how marketing communications are perceived and executed. Additionally, clients play a big role in the co-creation of the service, making relationships and communication between clients and PSF critical. Purpose: The purpose of this research is to investigate how PSFs communicate their services to clients. As an example of a PSF, the researchers chose to investigate the digital marketing agency, GA Agency, and their clients. This research aims to contribute to the academic field of services marketing and, more specifically, the stream of literature on PSFs and their communication and propose a theoretical model that represents their findings. Method: This research combines the interpretivism paradigm with qualitative research and an inductive approach, utilizing GA Agency as a single case study, to address the purpose of this research. The researchers designed open-ended, semi-structured research questions that were then posed to 11 employees of GA Agency and 2 of their clients. Conclusion: The findings of this research demonstrated the need for communication that is understandable for the clients, for example, in terms of resources. Additionally, educating the clients is important, to tackle the knowledge gap between agency and client, known as information asymmetry, and therefore build trust. Building a relationship between agency and client can help to enable communication and develop interactions and relationships simultaneously. This is represented in the conceptual model, showing the stages of relationship and according communication.