Mr. Arthur Kosten is a Co-Founder of Booking.com. He serves as Advisory Board Member at eVentures Africa Fund. He also served as Board Member & Investor at Catawiki. He also served as the Chief Marketing Officer at Booking.com. He is also an Angel Investor. Mr. Kosten also co-founded bookingsportal in 2001, one of the companies which later became booking.com. Established in 1996, Booking.com is the world's leading online hotel reservations agency, selling hotels in 170 countries around the world to both leisure and business markets. Arthur was Chief Marketing Officer of booking.com until early 2012. Currently, Arthur is an advisor to the booking.com executive team and investor in online businesses. He also serves as Board Member at HealthCare.com.