Gant Travel Management in 2015 issued a staggering 77 percent more airline tickets than it did just three years earlier. Clearly its value proposition is winning over clients. Facing a dearth of available corporate travel agents, however, Gant's capacity can't keep up. So the company is exploring offshore servicing, an option once considered taboo.

The practice isn't widespread. Gant now is one of 13 travel agency clients using facilities in Manila run by California-based Casto Travel. Gant also is using an undisclosed contractor to ramp up a separate operation in Guatemala City.

Offshoring was more controversial . . .

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