This research-in-progress aims to address the complex phenomenon of knowledge sharing within the context of social media. The objective of this paper is to examine how the affordances of social media impact knowledge sharing dynamics in intra-organizational Information Technology (IT) projects. This paper adopts Design Science Research (DSR) as research paradigm and the Technical Action Research (TAR) as validation method. One social media artifact will be designed and investigated within the context of an IT project. The expected contributions of this work will be twofold: (1) The results of this research should add to the literature on empirically tested theory of social media affordances on knowledge sharing dynamics in IT projects; (2) The instantiation of the TAR study will characterize a contribution of the type ‘situated implementation of artifact’. This research should have implications for both the Project Management and Knowledge Management communities. Practitioners should be directly benefited by this work with an in-depth understanding of social media affordances on knowledge sharing dynamics.