Sean O'Neill

Amadeus says it is pulling off its promised trick of staying profitable despite margin pressure on its mainstay airline services business. This year much depends on how well its reservation system projects with Southwest Airlines and IHG go.

Your eyes weren't fooling you. Late last year, Trivago really did spend more on its TV ads than ever before in many markets. In its first financial report as a public company, the price-comparison company says the ads are working.

Travefy solidifies its business with travel management companies, TravelCar brings its car rental solution to U.S. airports, NIDA Rooms expands its branded budget hotel room model in Southeast Asia, and more news in our weekly roundup.

Travelers have long asked Airbnb to make it easier to share the cost of a rental, including when they are using different currencies from a lodging host. By acquiring Tilt, the startup will likely add that service to its app.

It was only last May that Stayzilla received $13 million in a Series C round. An impressive-seeming execution must have blinded investors to spreadsheet data showing the company was not generating enough revenue to cover its costs.

After making a string of investments, Ctrip may be keeping its gunpowder dry in 2017 — at least according to our interpretation of the latest comments of its executives. That will give it a chance to digest its recent acquisition of Skyscanner and to deepen its hotel coverage within China.

A fresh approach to online distribution will heat up the corporate housing sector. It will make it easier for property managers to distribute serviced properties and for travel managers to book them.

Tink Labs is a standout Hong Kong company in the hotel ecosystem. It attracted $170 million in funding to make its Handy loaner smartphones a free amenity in hotels worldwide. But we found some other companies that are also offering promising tools for hoteliers.

Choice talks a good game about its SkyTouch subsidiary. But signs point to continued heartache. Expect the franchisor to focus instead on the vacation rental software it gained by acquiring Dutch startup Maxxton plus its own reservation system.

The bar for success is higher than usual for these companies because of their unlikeliness: an online seller of cruise trips, a traditional "high street" travel agency, a network of freelance photographers, and a maker of eyewear that records 360-degree-video.