At a time when news and journalism are experiencing significant disruption, Democracy Fund is seeking to better equip news outlets and reporters for large-scale transformations in platforms, news economics, and audience habits. New solutions are needed across organizations to build engagement, sustainability, and relevancy. These solutions need to be evaluated, compared, replicated, and scaled. Communities of Practice (CoPs) provide a structure in which this activity can happen adjacent to or outside of legacy settings. This paper examines the theory and evolution of CoPs and explores in greater detail the CoPs developing around engaged journalism, and how these ideas can be applied to other communities in journalism. The appendix provides a checklist for building and expanding CoPs.