Customer to add dark fiber, wavelength upgrades to expand capacity, diversity

BOULDER, Colo. – July 27, 2018 – Zayo Group Holdings, Inc. (NYSE: ZAYO) has expanded its relationship with a global cloud provider, with major sales across multiple products in the second calendar quarter. In order to bolster both capacity and network diversity, the provider is expanding its long haul dark fiber network and upgrading optical wavelengths capacity across the U.S.

The dark fiber solutions include leasing of multiple long haul dark fiber routes, including fully redundant paths to meet growing diversity requirements. The customer also selected Zayo to upgrade existing wavelength routes from 10G to 100G in order to significantly increase capacity. Zayo will also invest in additional metro network to connect to the provider’s data centers. In aggregate, the second calendar quarter commitments represent Zayo’s largest sales quarter with the long-standing customer.

As cloud adoption has grown, providers require high-capacity diversity at minimum and are moving to triversity or quadversity to ensure fully reliable redundancy. Providers are also significantly increasing network capacity between data centers.

“Earning this business is another vote of confidence from an important customer,” said Jack Waters, CTO and President of Fiber Solutions. “Over the years, we have demonstrated our ability to meet stringent requirements and timelines. As this provider grows and continues to expand and bullet proof its infrastructure, we are now in a position to be a trusted partner to them.”

For more information, please visit zayo.com

About Zayo Group
Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications infrastructure solutions, including fiber and bandwidth connectivity, colocation and cloud infrastructure to the world’s leading businesses. Customers include wireless and wireline carriers, media and content companies and finance, healthcare and other large enterprises. Zayo’s 128,200-mile network in North America and Europe includes extensive metro connectivity to thousands of buildings and data centers. In addition to high-capacity dark fiber, wavelength, Ethernet and other connectivity solutions, Zayo offers colocation and cloud infrastructure in its carrier-neutral data centers. Zayo provides users with flexible, customized solutions and self-service through Tranzact, an innovative online platform for managing and purchasing bandwidth. For more information, visit zayo.com.

Forward Looking Statements
This press release contains a number of forward-looking statements. Words, and variations of words such as “believe,” “expect,” “plan,” “continue,” “will,” “should,” and similar expressions are intended to identify our forward-looking statements. No assurance can be given that future results expressed or implied by the forward-looking statements will be achieved and actual results may differ materially from those contemplated by the forward-looking statements. These forward-looking statements involve risks and uncertainties, many of which are beyond our control. For additional information on these and other factors that could affect our forward-looking statements, see our risk factors, as they may be amended from time to time, set forth in our filings with the SEC, including our 10-K dated August 22, 2017. We disclaim and do not undertake any obligation to update or revise any forward-looking statement in this press release, except as required by applicable law or regulation.

Media: Pat Nichols, Corporate Communications
303-226-5955
press@zayo.com

Investors: Brad Korch, Investor Relations
720-306-7556
IR@zayo.com