Quantum Xchange Selects Zayo for Dark Fiber

Solution to enable first Quantum Key Distribution Network in the U.S.

BOULDER, Colo.–(BUSINESS WIRE)–Quantum Xchange has selected Zayo Group Holdings, Inc. (NYSE: ZAYO) for
a dark fiber solution to power the first Quantum Key Distribution (QKD)
network in the U.S. The 530-mile route will extend from Boston to
Washington D.C., leveraging Zayo’s existing network along the eastern
corridor.

Quantum key distribution, an innovative encryption method that relies on
properties of quantum mechanics, physically transfers a shared key
between two entities that can be used to encrypt and decrypt messages.
The properties of the photonic key prevent the transmission from being
unknowingly interrupted, corrupted, cloned, or exposed. The new
technology will address the shortcomings of algorithmic encryption and
the imminent threat of quantum computers which could break algorithmic
encryption.

Quantum Xchange plans to deploy the dedicated dark fiber to activate the
initial leg of its nationwide network, connecting the financial markets
on Wall Street with back office operations in New Jersey.

“With high capacity, low latency and inherent security, Zayo’s dark
fiber infrastructure is ideal for the nation’s first Quantum Key
Distribution network,” said Jack Waters, CTO and president of Fiber
Solutions at Zayo. “We look forward to working with Quantum Xchange on
this groundbreaking initiative.”

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
128,900-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.

Contacts

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