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Global Cloud Provider Selects Zayo for Dark Fiber in Canada

Press Release

Ring expands Zayo’s fiber footprint in Montreal

BOULDER, Colo. –
A global cloud provider has selected Zayo Group Holdings (NYSE: ZAYO)
for a high-capacity dark fiber ring in the Montreal metro area. Zayo
will extend its existing dense network in Montreal, building a
60-kilometer (km) ring for the anchor tenant along the South Shore, the
city’s growing technology and data center hub.

The deployment will support the customer’s strategy to significantly
expand its presence in Montreal, ultimately connecting multiple data
centers. With its favorable location and cost-effective power, the South
Shore has become an attractive location for data centers, cloud
providers and webscale companies.

Zayo was selected by the cloud provider because of its leading fiber
network in Canada, deep experience in building high-performance fiber
network and flexibility in planning for the customer’s continued growth.

The network will further densify Zayo’s Montreal network, expanding it
into several metro municipalities. The build will include an expansion
cable, with ample capacity for expected follow-on sales in multiple
sectors. Montreal is a leading North American commercial hub and a
growing center for finance, media, artificial intelligence (AI), gaming
and other large enterprise.

“This project enables us to further expand our Canadian footprint and
deliver the high-performance communications infrastructure that this
long-standing customer merits,” said Jack Waters, CTO and president of
Fiber Solutions at Zayo. “We expect to capture the benefits of scale
leveraging our dense Montreal footprint and these new success-based
routes.”

For more information about Zayo’s network, 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
127,000-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 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.

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Zayo Group Holdings, Inc.
Media:
Shannon Paulk,
303-577-5897
Corporate Communications
press@www.zayo.com
or
Investors:
Brad
Korch
, 720-306-7556
Investor Relations
IR@www.zayo.com