Mobile devices are increasingly being used by travellers researching holidays online, according to a study by HeBS Digital Research. A big trend, cited by 60% of holiday-makers, was to start researching holiday information on a mobile device, before moving to a computer later in the booking journey. When asking travel websites about their customers, they found that 44% of page views came from mobile devices, and over 20% of bookings were made on mobile devices. The research shows that it is increasingly important for travel websites to optimise their websites for mobile devices. This is especially true since several of the world's major search engines, such as Google and Yandex, have introduced mobile-friendliness as a ranking factor in the search engine results pages (SERPs).