This document discusses how teams can create an open organizational culture. It defines an open organization as one characterized by transparency, inclusivity, adaptability, collaboration, and community. For teams, creating such a culture involves building APIs or adapters to loosely couple from a potentially hostile larger organization, or building allies and compatible ways of working to more strongly couple. Specific suggestions for teams include using physical space to radiate an open culture and inviting others to reviews and tours of work areas. High performing teams result from the supportive context provided by leadership.