To reach this summer's estimated 222 million travelers, the global travel industry must engage travelers offline and online via various technologies.

Here's a look at the top five digital business trends affecting travel this summer.

Mobile's effect is enormous on travelers: "62% think it's important for hotels to allow bookings on mobile devices," according to the following SDL infographic. Moreover, 56% of travelers use their smartphone to check flight status.

Travelers also use online travel agency (OTA) metasearch as an efficient way to get a quick view of the market, states SDL: "64% refer to a travel research site like TripAdvisor for travel inspiration."