Beginning in the first quarter of 2019 we have two reportable segments: (1) Hotels, Media & Platform; and (2) Experiences & Dining. Our Hotels, Media & Platform reportable segment includes the following revenue sources: (1) TripAdvisor-branded hotels revenue – primarily consisting of TripAdvisor-branded hotel metasearch auction-based revenue, transaction revenue from our hotel instant booking feature, subscription-based advertising and hotel sponsored placements advertising revenue; and (2) TripAdvisor-branded display and platform revenue – consisting of TripAdvisor-branded display-based revenue. Our focus within the Hotels, Media & Platform reportable segment is to generate profit while driving increased customer and client engagement with, and high-margin media advertising revenue from, the TripAdvisor platform. Our Experiences & Dining reportable segment, which includes an aggregation of our Experiences and Restaurants operating segments, reflects our ongoing investment focus to drive revenue growth and to reinforce our market leading position in these growing offerings. All remaining business units have been combined into and reported as “Other”, which includes Rentals, Flights/Cruises/Car Rentals, SmarterTravel, and TripAdvisor China, as none of these businesses meet the quantitative thresholds and other criteria to qualify as reportable segments, and therefore are combined and disclosed as Other.

All direct general and administrative costs are included in the applicable segments and business units; however, all corporate general and administrative costs are included in the Hotels, Media & Platform reportable segment. In addition, the Hotels, Media & Platform reportable segment includes all TripAdvisor-related brand advertising expenses (primarily television advertising), and technical infrastructure and other costs supporting the TripAdvisor platform.

The nature of the services provided and revenue recognition policies are summarized by reported segment in “Note 3: Revenue Recognition.” All prior period segment disclosure information has been reclassified to conform to the current reporting structure in this Form 10-Q. These reclassifications had no effect on our unaudited condensed consolidated financial statements in any period.

Adjusted EBITDA is our segment profit measure and a key measure used by our management and Board of Directors to understand and evaluate the operating performance of our business and on which internal budgets and forecasts are based and approved. We define Adjusted EBITDA as net income (loss) plus: (1) provision for income taxes; (2) other income (expense), net;

(3) depreciation of property and equipment, including amortization of internal use software and website development; (4) amortization of intangible assets; (5) stock-based compensation and other stock-settled obligations; (6) goodwill, long-lived asset and intangible asset impairments; (7) legal reserves and settlements; and (8) non-recurring expenses and income.

The following tables present our segment information for the three and nine months ended September 30, 2019 and 2018 and includes a reconciliation of Adjusted EBITDA to Net Income. We record depreciation of property and equipment, including amortization of internal-use software and website development, amortization of intangible assets, stock-based compensation and other stock-settled obligations, legal reserves and settlements, other income (expense), net, other non-recurring expenses and income, net, and income taxes, which are excluded from segment operating performance, in corporate and unallocated. In addition, we do not report our assets, capital expenditures and related depreciation expense by segment as our CODM does not use this information to evaluate operating segments. Accordingly, we do not regularly provide such information by segment to our CODM. Intersegment revenue is not material and is included in Other.

	Three months ended September 30, 2019
	Hotels, Media & Platform (1)		Experiences & Dining		Other (3)		Corporate and Unallocated			Total
	(in millions)
Revenue	$	238	$	141	$	49	$	-		$	428
Adjusted EBITDA	93			15		21		-			129
Depreciation								(23	)		(23	)
Amortization of intangible assets								(9	)		(9	)
Stock-based compensation								(29	)		(29	)
Operating income											68
Other income, net											5
Income before income taxes											73
Provision for income taxes											(23	)
Net income											50

	Three months ended September 30, 2018
	Hotels, Media & Platform (2)		Experiences & Dining		Other (3)		Corporate and Unallocated			Total
	(in millions)
Revenue	$	270	$	118	$	70	$	-		$	458
Adjusted EBITDA	97			28		21		-			146
Depreciation								(20	)		(20	)
Amortization of intangible assets								(8	)		(8	)
Stock-based compensation								(29	)		(29	)
Operating income											89
Other expense, net											(2	)
Income before income taxes											87
Provision for income taxes											(18	)
Net income											69

	Nine months ended September 30, 2019
	Hotels, Media & Platform (1)		Experiences & Dining			Other (3)		Corporate and Unallocated			Total
	(in millions)
Revenue	$	746	$	346		$	133	$	-		$	1,225
Adjusted EBITDA	306			(1	)		42		-			347
Depreciation									(69	)		(69	)
Amortization of intangible assets									(23	)		(23	)
Stock-based compensation									(91	)		(91	)
Operating income												164
Other income, net												9
Income before income taxes												173
Provision for income taxes												(63	)
Net income												110

	Nine months ended September 30, 2018
	Hotels, Media & Platform (2)		Experiences & Dining		Other (3)		Corporate and Unallocated			Total
	(in millions)
Revenue	$	795	$	278	$	196	$	-		$	1,269
Adjusted EBITDA	259			39		37		-			335
Depreciation								(61	)		(61	)
Amortization of intangible assets								(24	)		(24	)
Stock-based compensation								(90	)		(90	)
Operating income											160
Other expense, net											(10	)
Income before income taxes											150
Provision for income taxes											(45	)
Net income											105