Research on coparenting has grown over the past decade, supporting a view of coparenting as a central element of family life that influences parental adjustment, parenting, and child outcomes. This article introduces a multi-domain conception of coparenting that organizes existing research and paves the way for future research and intervention. This article advances a conceptualization of how coparenting domains influence parental adjustment, parenting, and child adjustment. An ecological model that outlines influences on coparenting relationships, as well as mediating and moderating pathways, is described. Areas of future research in the developmental course of coparenting relationships are noted.