Sonoma County Tourism is the official destination marketing organization for California's Sonoma County. SCT is a private, non-profit marketing and sales organization dedicated to promoting overnight stays and creating a sustainable hospitality economy in Sonoma County, California.Sonoma County Tourism is the official destination marketing organization for California's Sonoma County. SCT is a private, non-profit marketing and sales organization dedicated to promoting overnight stays and creating a sustainable hospitality economy in Sonoma County, California.