One of the reasons providers are choosing cloud-based systems over on-premise software is the resource-intensive deployments required with legacysystems.
Other than that, though, you won't be spending too much time here, given the fact that you can't run legacy programs written for traditional x86-based Windows systems.
That said, you won't be spending much time down here on the desktop, since Windows RT can't run legacy programs written for traditional, x86-based Windows systems.
Enterprise clients also report that SaaS-based CRM systems are delivering net-new applications that deliver complementary functionality not possible with legacy and previous-generation CRM platforms.