In this paper we propose a workpractice perspective towards operationalizing the coordination of mega-projects. This perspective matured over several years in development practice at Ericsson, a major supplier of telecommunication products and services worldwide. Key points in the perspective are the management of critical dependencies and the construction of a communal understanding of how to coordinate projects. Coordination is seen as a workpractice, where actors provide coordination to the project. The main conclusion is that the suggested approach enables the coordination of extraordinarily complex mega-projects.