There’s no question that Amazon (NASDAQ: AMZN) is the king of cloud computing. Amazon Web Services (AWS), the e-commerce giant’s cloud computing arm, generated $3.2 billion of revenue during the third quarter alone, putting the business at an annual run rate well over $10 billion. Few of its major competitors disclose detailed information, but according to Synergy Research, AWS controls 31% of the global cloud infrastructure market, compared to 24% for the next three largest players combined.