The Internet of Things may be a new idea, but machines talking to other machines is not.

The way connected devices are evolving in industry, where they’ve been used for years, says a lot about why IoT has the potential to be something very big. But within enterprises, that evolution can also present some challenges.

It’s a common but sometimes overlooked part of the shiny new world of IoT. Most opportunities to deploy enterprise IoT are in so-called brownfield environments, organizations where some form of connected device is already in place. Only 2 percent of those installed systems have been upgraded to IoT so far, Cisco Systems estimates.

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