Its study looks at leisure and unmanaged business travel bought via any device, with the estimates “based on an analysis of quantitative and qualitative data from research firms, government agencies, media firms and public companies, plus interviews with top executives at publishers, ad buyers and agencies.” The global picture for online travel is healthy, although annual growth will slow over the next few years. Get the full story at Tnooz Read also "APAC set to become the world’s largest digital travel sales market"