CANNES, France--(BUSINESS WIRE)--PubMatic, the marketing automation software company for publishers, today announced the expansion of its relationship with MediaMath to include programmatic sales of premium mobile, video, and direct advertising inventory. In addition to its existing API integration, MediaMath will soon offer its clients API-based access to premium mobile and video inventory through PubMatic. The ability of buyers to tap into programmatic direct and video inventory cannot be ove