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 Sahara desert is the third largest desert in the world. It is  also the world's hottest desert. The countries it covers include  Algeria, Chad, Egypt, Libya, Mali, Mauri â¦ tania, Morocco, Niger,  Western Sahara, Sudan, and Tunisia. The two largest deserts in Africa are the Sahara in northern Africa and the Kalahari in southern Africa.       The Sahara Desert covers 3,500,000 miles. It is the largest desert in the world. The name Sahara comes from the Arabic word for desert.