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June 11, 2025 30 mins

In this episode, Mike Underdown, Founder and CEO of Crosstown Fiber, shares his remarkable journey through the telecom industry — from pioneering CLECs to founding one of Chicago’s most unique underground fiber infrastructure companies. Mike discusses how Crosstown Fiber is building diverse, high-capacity fiber routes critical to data center interconnection and why planning and engineering are key to avoiding costly connectivity issues. He also opens up about surviving stage four cancer and how that experience shaped his company’s values, leadership style, and culture of doing the right thing — because it’s right.


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