Large Data Centre Provider Selects Zayo for Dark Fibre

Press Release

|16 June 2017

Zayo’s low-latency routes serve financial sector

BOULDER, Colo. –
Zayo Group Holdings, Inc. (NYSE: ZAYO) has been selected by a large data
centre provider for dark fibre to connect its East Coast data centres.
The solution includes primary and diverse routes in New York and New
Jersey, providing low-latency infrastructure for the provider.

Zayo’s solution consist of more than 30 dark fibre pairs along
completely diverse routes for the data centre provider. Diverse and
low-latency connectivity is a critical requirement for data centres,
especially those that serve the financial sector. The solution leverages
existing low-latency routes in the New York/New Jersey metropolitan
corridor and requires limited buildout.

Increasingly, data centres and webscale cloud providers are focusing on
high-performance fibre connectivity as an integral element of their
service. High-bandwidth infrastructure facilitates higher data rates,
preventing bottlenecks and slow throughput.

“The provider’s customers include financial services companies and buy
and sell-side firms, which require high capacity and low latency,” said
Jack Waters, CTO and president of Fibre Solutions at Zayo. “Zayo’s dark
fibre routes provide the speed, security and performance the provider
requires, along with the ability to scale.”

For more information on Zayo, please visit zayo.com.

About Zayo Group

Zayo Group Holdings, Inc. (NYSE: ZAYO) provides communications
infrastructure services, including fibre 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
122,000-mile network in North America and Europe includes extensive
metro connectivity to thousands of buildings and data centres. In
addition to high-capacity dark fibre, wavelength, Ethernet and other
connectivity solutions, Zayo offers colocation and cloud infrastructure
in its carrier-neutral data centres. Zayo provides clients with
flexible, customized solutions and self-service through Tranzact, an
innovative online platform for managing and purchasing bandwidth and
services. 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 25, 2016. 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@zayoeuropedev.wpenginepowered.com
or
Investors:
Brad
Korch
, Investor Relations
720-306-7556
IR@zayoeuropedev.wpenginepowered.com