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Today, advancements in monitoring, management and automation software abstract much of the physical IT infrastructure away. As a result, IT departments no longer manage servers, networks and storage separately -- at least not to the extent they once did. These components are all part of a software-defined data center that depends less on humans and more on computer code. IT roles are evolving in response to this new approach. There are fewer specialists tasked with monitoring, maintaining and updating hardware-specific resources. Instead, there are more generalists who increasingly develop software to make their infrastructure more efficient and autonomous. At the same time, more organizations are deploying mobile applications and other software to replace or improve upon existing business processes. But this trend, known as digital transformation, has many opposing forces. Mobile application developers' skills are in high demand and short supply. New apps need to integrate with existing IT resources, which can be a challenge. ...