Online is not only the fastest-growing medium in history, it's spurred a sea change in marketing's rules, even its very role. How are senior marketing executives charged to cope? Decisions are relentless: budget allocations, media, integration opportunities. So are the problems: an ever more elusive audience, technology complexities, mounting competition. CMO offers a highly strategic, executive approach to interactive marketing and will help get everyone on board with the program -- from your customer to your CEO.