Tourism is predominantly purposes or the provision of services to support this leisure travel. The World Tourism Organization defines tourists as people who "travel to and stay in places outside their usual environment for not more than one consecutive year for leisure, business and other purposes not related to the exercise of an activity remunerated from within the place visited". Tourism has become a popular global leisure activity. In 2006, there were over 842 million international tourist arrivals.
The developments in technology and transport infrastructure such as jumbo jets and low-budget airlines have made many types of tourism more affordable. There have also been changes in lifestyl e, such as retiree-age people who living as a tourist all the year round. This is facilitated by internet purchasing of tourism products. Some sites have now started to offer dynamic packaging, in which an inclusive price is quoted for a tailor- made package requested by the customer upon impulse.