Cloud service providers invest in the necessary infrastructure and management systems, and in return receive a time-based or usage-based fee from end users [17]. Cloud computing is emerging today as a commercial infrastructure that eliminates the need for maintaining expensive computing hardware.
Area: 9,400,000 sq.km. Population: 2.5 million people. Population density: o.4/sq. km or less than 1 person per sq mi. Sahara is the largest non-polar desert and the hottest of the sub-tropical deserts in the world. The desert can be estimated nearly as large as USA or China. Sahara covers most of the north-Africa under its belt by bordering with Red Sea, touching Mediterranean coasts to Atlantic shelves.
The world's largest desert is actually the very cold continent of Antarctica. It is the world's driest place, receiving less than two inches of precipitation annually. Antarctica is 5.5 million square miles (14,245,000 square kilometers) in area.utside of polar regions, Northern Africa's Sahara Desert is the world's largest desert at more than 3.5 million square miles (nine million square kilometers), which is slightly smaller that the size of the United States, the world's fourth largest country.