Cloud ERP providers have long touted the benefits of SaaS, such as a flexible and predictable cost structure, better and more accessible data, and reduced dependence on IT for routine maintenance. Yet many enterprises continue to postpone migration, fearing that the initial cost will take too long to recoup. A new study by Nucleus Research not only shows that such fears are unfounded, but also that the time to value for cloud business applications continues to accelerate.Here's a closer look at the drivers behind the dramatic difference in ROI for on-premises and cloud solutions, with a focus on ERP.