This guidance is intended for Volunteer and Technical Communities (V&TCs) and tech groups that have a desire to collab- orate with Formal Humanitarian Organizations. We hope that it best fits the needs of V&TCs and tech groups that currently seek practical advice on how to devel- op projects with formal humanitarian organizations or how to further strengthen pre-existing collaborative relationships. We hope that this Guidance helps V&TCs better understand the modus operandi of humanitarian organizations so that they may better formulate requests for part- nerships and maximize the benefits of collaborative relationships.