Zayo announced a series of advancements to make its independent fiber network even more powerful for customers. The growth marks Zayo's largest organic network expansion to date and encompasses best-in-class long-haul dark fiber, 400 Gbps (400G) upgrades and subsea routes across the globe. This effort represents an investment totaling nearly a quarter of a billion dollars that will continue to yield new and upgraded routes globally over the next 18 months.