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Internet Analytics and Cybersecurity Firm Selects Zayo

Press Release

Solution supports customer’s global security solutions

BOULDER, Colo. –
An internet analytics and cybersecurity firm has selected Zayo Group
Holdings, Inc. (NYSE: ZAYO) for an E-LAN solution, which provides
high-capacity networks for the customer’s security solution along with
an internal network. The diverse solution leverages Zayo’s network
across the U.S. and Western Europe. Zayo’s strong network backbone and
exceptional responsiveness were key factors in earning this business.

Cybersecurity is a high-growth industry, with global
spending
on solutions expected to exceed $1 trillion by 2021.
High-profile cyber attacks have accelerated the demand for sophisticated
detection and mitigation.

“We were able to design, optimize and finalize the solution in less than
30 days,” said Tyler Coates, senior vice president of Enterprise at
Zayo. “There are not many providers that can be this agile. We’re moving
forward to implement this solution for the customer as quickly as
possible.”

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@www.zayo.com

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