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Webscale Company Selects Zayo for Wavelength Connectivity

Press Release

High-capacity route will connect two key European regions

BOULDER, Colo. –
Zayo Group Holdings, Inc. (NYSE: ZAYO) was selected by a major webscale
company for a wavelength solution to provide capacity between two of the
company’s data centers in Europe. The solution will be deployed on a
direct route owned and operated by Zayo, tailored to the customer’s
exact requirements.

The route, which leverages acquired assets from Viatel, will provide a
key portion of the company’s core network in Europe. Zayo continues to
see continued demand in Europe for high-capacity networks, in both dark
fiber and wavelength form, from global companies in multiple sectors.

“Zayo’s owned infrastructure was a major differentiator in winning this
business,” said Annette Murphy, Zayo’s managing director of Europe. “We
are able to provide very high-capacity connectivity and deploy it very
quickly for the customer.”

“In this case, our long-standing customer needs terabytes of throughput
on a direct route,” said Randy Dunbar, president of Transport at Zayo.
“It’s an excellent illustration of leveraging our embedded network to
provide the customer with a solution that meets their capacity needs.”

For more information about Zayo, 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
130,000-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 24, 2018. 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.

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Media:
Shannon Paulk, Corporate Communications
303-577-5897
press@oldzayo.burbledev.com

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