Mark Jacobstein is the former Chief User Engagement Officer at Guardant Health, where he developed and implemented successful market entry and commercialization strategies for cancer detection via liquid biopsies. Mark is a serial entrepreneur always on the edge of seismic platform shifts, with multiple companies in the online and mobile worlds, including a stint at Qualcomm after the acquisition of his mobile VoIP company iSkoot. Next, he identified the intersection of biology and software as the next fundamental opportunity for change. Now he supports and invests in multiple companies in this field. As for his own invention of the world's first online fantasy sports business in1994, he attributes it to his long-suffering fate as a Red Sox fan.