ASI Lake Union is a local regional chapter of Adventist-laymen's Services and Industries (ASI), an international organization of Christian individuals who work in the private sector in business, professional vocations, and non-profit ministries. ASI has a membership of approximately 1,000, which represents a rich diversity of people from nearly every walk of life and from all over the globe. 

The ASI motto is Sharing Christ in the Marketplace.

The ASI philosophy promotes a Christ-centered walk, manifested by a daily commitment to partner with God in spreading the gospel, which is the mission of the Seventh-day Adventist Church. Members seek to live out God's love in their own lives and share that love with the millions of people they encounter in their businesses and professional activities each year.