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Principal Analyst Erik Kreifeldt tracks the global market for enterprise and wholesale network services for TeleGeography, and he co-chairs the WAN Summit conference series on corporate wide-area network management. Before joining TeleGeography in 2006, Erik was an optical networking industry analyst with RHK, following editorial roles at industry publications including the Optical Society of America, where he covered the first commercial DWDM systems. He holds an MBA from the Kelley School of Business at Indiana University and a B.A. from Penn State.