Zayo to Establish Data Center Presence in UK

BOULDER, Colo. –
Zayo Group Holdings, Inc. (NYSE: ZAYO) will expand its European data
center presence with a new location in Feltham, UK. The zColo facility,
the company’s first data center in the London metro area, will add
30,000 total square feet and 3.6 megawatts (MW) of critical power.

The new data center is driven by a commitment from a major anchor tenant
and strong demand in the UK. The carrier-neutral facility, which is
located at the confluence of the UK’s major telecom networks, provides
extensive interconnectivity as well as access to Zayo’s global fiber
backbone. It is located minutes from Heathrow.

The growth in consumer content, mobile business services, technology
businesses and webscale cloud providers is driving demand for colocation
space in London. Over the past several years, Zayo has leveraged network
assets from Geo and Viatel, significantly growing its UK-based fiber
business. The new data center provides an in-country location for these
customers, meeting their requirements for high-capacity infrastructure
that complies with Brexit-related data sovereignty laws.

“This new data center strengthens our commitment to the UK, providing
customers with an excellent option for colocation and high-capacity
fiber connectivity,” said TJ Karklins, senior vice president of Zayo’s
zColo business segment. “This facility will offer low-latency
connectivity to Slough, city center, and even around central London for
connection directly to France and the rest of Europe. We look forward to
delivering high-compliance, network-neutral solutions from our growing
European platform.”

For more information on Zayo’s data centers, please visit zayo.com/services/data-center-colocation/.

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