The Company uses the management approach to determine the segment financial information that should be disaggregated and presented separately in the Company's notes to its condensed consolidated financial statements. The management approach is based on the manner by which management has organized the segments within the Company for making operating decisions, allocating resources, and assessing performance.

As the Company has increased in scope and scale, it has developed its management and reporting structure to support this growth. The Company’s bandwidth infrastructure, colocation and connectivity offerings are comprised of various related product groups generally defined around the type of offering to which the customer is licensing access, referred to as SPGs. Each SPG is responsible for the revenue, costs and associated capital expenditures of its respective solutions. The SPGs enable licensing and sales, make pricing and product decisions, engineer networks and deliver solutions to customers, and support customers for specific telecom and internet infrastructure requirements.

During the fourth quarter of Fiscal 2019, with the continued increase in our scope and scale, our chief operating decision maker ("CODM"), who is our Chief Executive Officer, implemented certain organizational changes to the management and operation of the business that directly impact how the CODM makes resource allocation decisions and manages the Company. The changes in structure had the impact of combining our legacy Fiber Solutions, Transport and Enterprise segments into a single new segment, Zayo Networks and re-aligning our Cloud and Cybersecurity SPG from our legacy Enterprise segment to our zColo segment. These changes to our existing reportable segments have been recast for all prior periods. The Company’s segments are further described below:

Zayo Networks. Our Zayo Networks segment provides access to bandwidth infrastructure. This includes our Fiber, Layer 2/3 and Transport solutions. Within the Fiber business, Zayo provides access to mobile infrastructure (fiber-to-the-tower and small cell). Our mobile infrastructure solutions permit direct fiber connections to cell towers, small cells, hub sites and mobile switching centers. Fiber solutions customers include carriers and other communication service providers, internet service providers, wireless service providers, major media and content companies, large enterprises and other companies that have the expertise

to run their own fiber optic networks or require interconnected technical space. The contract terms for fiber solutions customers tend to range from three to twenty or more years. Our Layer 2/3 line of business provides connectivity and telecommunications solutions to medium and large enterprises. Our offerings within Layer 2/3 include Ethernet, internet offerings, Wide Area Networking products and CloudLink. Solutions range from point-to-point data connections to multi-site managed networks to international outsourced IT infrastructure environments. The contract terms for Layer 2/3 solutions tend to range from one to five years. Our Transport line of business provide access to lit communications bandwidth infrastructure using customer-accessed optronics to light the fiber and, and our customers pay for access based on the amount and type of bandwidth they require. We target customers who require a significant amount of bandwidth across their networks. Transport customers include carriers, content providers, financial services companies, healthcare, government entities, education institutions and other medium and large enterprises. The contract terms in this segment tend to range from two to five years.

Zayo Colocation (“zColo”). The zColo segment provides data center and cloud infrastructure solutions to a broad range of enterprise, carrier, cloud and content customers. Our offerings within this segment include the provision of colocation space, power and interconnection offerings in North America and Western Europe. Solutions range in size from single cabinet solutions to 1MW+ data center infrastructure environments. Our data centers also support a large component of networking components for the purpose of aggregating and accommodating customers’ data, voice, internet and video traffic. The contract terms in this segment tend to range from two to five years. Our Cloud and Cybersecurity SPG is included in the zColo segment. The Cloud and Cybersecurity SPG combines private cloud, public cloud and managed offerings in order to provide its customers secure infrastructure as a service (IaaS), which enables on-demand scaling and virtual computing in hybrid environments.

Allstream. The Allstream segment provides Cloud VoIP and Data Solutions. This includes a full range of local voice offerings allowing business customers to complete telephone calls in their local exchange, as well as make long distance, toll-free and related calls. Unified Communications is the integration of real-time communication services such as telephony (including Cloud-based IP telephony), instant messaging and video conferencing with non-real-time communication services, such as integrated voicemail and e-mail. Allstream also provides customers with comprehensive telecommunications services including Ethernet, and IP/MPLS VPN Solutions.

Other. The Other segment is primarily comprised of Zayo Professional Services (“ZPS”). ZPS provides network and technical resources to customers who wish to leverage the Company’s expertise in designing, acquiring and maintaining a network. The contract terms typically run for one year for a fixed recurring monthly fee in the case of network and on an hourly basis for technical resources (usage revenue). ZPS also generates revenue via telecommunication equipment sales.

The results of operations for each segment include an allocation of certain indirect costs and corporate related costs, including overhead and third party-financed debt. The allocation is based on a percentage that represents management’s estimate of the relative burden each segment bears of indirect and corporate costs. Management has evaluated the allocation methods utilized to allocate these costs and determined they are systematic, rational and consistently applied. Identifiable assets for each reportable segment are reconciled to total consolidated assets including unallocated corporate assets and intersegment eliminations. Unallocated corporate assets consist primarily of cash and deferred taxes.

Segment Adjusted EBITDA is the primary measure used by the Company’s CODM to evaluate segment operating performance.

The Company defines Segment Adjusted EBITDA as earnings from operations before interest, income taxes, depreciation and amortization (“EBITDA”) adjusted to exclude acquisition or disposal-related transaction costs, losses on extinguishment of debt, stock-based compensation, unrealized foreign currency gains/(losses) on intercompany loans, gains/(losses) on business dispositions and non-cash income/(loss) on equity and cost method investments. The Company uses Segment Adjusted EBITDA to evaluate operating performance, and this financial measure is among the primary measures used by management for planning and forecasting of future periods. The Company believes the

presentation of Segment Adjusted EBITDA is relevant and useful for investors because it allows investors to view results in a manner similar to the method used by management and facilitates comparison of the Company’s results with the results of other companies that have different financing and capital structures.

Segment Adjusted EBITDA results, along with other quantitative and qualitative information, are also utilized by the Company and its Compensation Committee for purposes of determining bonus payouts to employees.

Segment Adjusted EBITDA has limitations as an analytical tool and should not be considered in isolation from, or as a substitute for, analysis of the Company’s results from operations and operating cash flows as reported under GAAP. For example, Segment Adjusted EBITDA:

The Company’s computation of Segment Adjusted EBITDA may not be comparable to other similarly titled measures computed by other companies because all companies do not calculate segment Adjusted EBITDA in the same manner.


	As of and for the Three Months Ended September 30, 2019
	Zayo Networks		zColo		Allstream		Other		Corp/ Eliminations		Total
	(in millions)
Revenue from external customers	$	483.2	$	63.7	$	86.6	$	5.1	$	—	$	638.6
Segment Adjusted EBITDA		277.5		26.6		9.3		1.4		—		314.8
Total assets		7,992.4		1,312.2		388.6		33.1		155.5		9,881.8
Capital expenditures		194.8		18.1		4.2		—		—		217.1


	For the Three Months Ended September 30, 2018
	Zayo Networks		zColo		Allstream		Other		Corp/ Eliminations		Total
	(in millions)
Revenue from external customers	$	461.6	$	69.3	$	105.0	$	5.2	$	—	$	641.1
Segment Adjusted EBITDA		266.2		31.3		20.8		1.1		—		319.4
Capital expenditures		149.2		28.7		4.6		—		—		182.5

As of June 30, 2019

Zayo Networks

zColo

Allstream

Other

Corp/
Eliminations

Total

(in millions)

Total assets

7,677.5

1,152.3

376.9

35.1

92.8

9,334.6

Reconciliation from Total Segment Adjusted EBITDA to income from operations before taxes:


	Three Months Ended September 30,
	2019		2018
	(in millions)
Total Segment Adjusted EBITDA	$	314.8	$	319.4
Interest expense		(84.7)		(82.2)
Depreciation and amortization expense		(156.1)		(167.8)
Transaction costs		(2.0)		(0.7)
Stock-based compensation		(27.2)		(26.7)
Foreign currency loss on intercompany loans		(12.9)		(4.6)
Gain on business disposition		—		5.5
Non-cash loss on investments		—		(0.3)
Income from operations before income taxes	$	31.9	$	42.6