Online Travel Market Size, Share, Competitive Landscape and Trend Analysis Report, by Service types (Transportation, Travel Accommodation, and Vacation Packages), Platforms (Mobile and Desktop), Mode of Booking (Online Travel Agencies (OTAs) and Direct Travel Suppliers) ,and Age Group (22-31 Years, 32-43 Years, 44-56 Years, and >56 Years): Global Opportunity Analysis and Industry Forecast, 2022-2031