"Deutsche Bank analyst Karl Keirstead:
Azure revenues fall in a range of $500 to $700 million and accounts for 1 to 2 percent of Microsoft's total revenue base. AWS' revenue stands at around $6 billion, implying Amazon's service is up to 10 times larger than Microsoft's."
Sizing Microsoft Azure And AWS Revenue @ Forbes
"Microsoft Azure is experiencing accelerating adoption...Azure growth will be substantial in 2015”