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Booking.com/Agoda/et al’s umbrella company disclosed it had spent $2.8 billion on online advertising over the course of the 12 months ending December 31 2015.
The figure of $2.8 billion was joined by a more modest $215 million used to push the brands on offline channels, such as television and outdoor.
The online ad spend is a jump upwards from $2.4 billion in 2014, although the cost of its offline activity has decreased from $230 million.
Expedia Inc says it spent $3.3 billion during 2015 – an increase of 23% y/y.
The company says Expedia, Trivago, Hotwire and Hotels.com accounted for the majority of the total increase.