Everyone seems to be gabbing about the “cloud” these days. Whether it’s Apple’s much-hyped iCloud service or the Amazon Cloud, the now-popular euphemism for web-based software services has become one of the tech world’s biggest buzz words. Microsoft joined in on the action today by unveiling a revamped web-based version of its popular Office suite of business software. But Microsoft’s main target here is not Apple or Amazon, but Google, which has stolen some of the software maker’s corporate customers in recent years with cheap, web-only alternatives.