Cloud Computing Expo

The much-hyped cloud really is growing -- so quickly, in fact, that this year's New York conference is expected to draw 5,000 attendees, more than quadruple last year's crowd. Even President Barack Obama has called for a switch to cloud computing, because it can stretch the $80 billion budget for federal technology spending. And IBM recently nabbed a deal to create a cloud model for the Air Force, a chance to prove that the cloud can handle heaps of highly sensitive data. But you have to...