Business as Mission (BAM) is the operation of a for-profit business located in a cross-cultural setting and aimed toward the fulfillment of the great commission. This definition reveals four key success factors for BAM: support, financial and otherwise, for both the business and the missionaries; the ability to gain access to cross-cultural settings; the opportunity to advance the gospel; and the requirement of managing both missional and business goals. Examining each of these areas, along with the historical effectiveness of BAM, reveals that BAM is an efficient and effective missional strategy, which should be used to see the Great Commission fulfilled by current generations.