Field service has always been fairly complicated, from how it's charged to how it's delivered. It stretches across multiple dimensions of time and geography, and involves an intricate dance of customer needs, workforce skills and availability, and parts. The act of tracking all of the moving pieces and creating usable data is beyond the scope of most ERP suites, and has generated its own class of software to manage it. But a number of trends are going to make field service management even more complex in the future.