Cambridge Platform, declaration of principles of church government and discipline, forming in fact a constitution of the Congregational churches. It was adopted (1648) by a church synod at Cambridge, Mass., and remains the basis of the temporal government of the churches. It had little to do with matters of doctrine and belief. The Congregationalists of Connecticut later subscribed (1708), in the Saybrook Platform, to a more centralized church government, resembling Presbyterianism. See also Congregationalism.