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Large Cloud Provider Selects Zayo for Wavelength Connectivity

Press Release

Solution provides high-capacity triversity between large data centers

BOULDER, Colo. –
A global webscale cloud provider has selected Zayo Group Holdings, Inc.
(NYSE: ZAYO) for wavelength connectivity. Zayo’s solution will provide
high-capacity connectivity between a major west coast data center and
another facility located centrally in the U.S.

The solution will provide the customer with triversity between the data
centers, with up to 2TB of capacity. The customer selected Zayo for its
ability to provide a completely separate, high-capacity route to
complement its primary and secondary networks. Increasingly, cloud
providers require diversity at a minimum and are moving more towards
triversity or quadversity to ensure fully reliable redundancy.

The global public cloud market is expected to grow approximately 35
percent over the next two years, according to a recent
report
from Gartner. To handle the demand, providers are investing
to expand and bullet proof their infrastructure, which includes
redundant fiber and lit fiber-based connectivity between data centers.

“We were able to secure this contract because of our existing fiber
infrastructure, lit fiber-based footprint and ability to mobilize to
complete the project very quickly,” said Andrew Crouch, president and
COO at Zayo. “Earning this business is an important vote of confidence
from a long-standing customer.”

For more information on 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
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,
Corporate Communications
303-577-5897
press@www.zayo.com
or
Investors:
Brad
Korch
, Investor Relations
720-306-7556
IR@www.zayo.com