Online reported that Amazon's cloud business grew slower than expected in the first quarter for the third consecutive quarter. Amazon Web Services (AWS) revenue rose 17% to $29.27 billion, compared with analysts surveyed by StreetAccount forecast $29.42 billion. The growth rate slowed down from 18.9% in the fourth quarter of last year. AWS is the world's largest cloud infrastructure provider, accounting for approximately 19% of its parent company's total revenue. Its largest competitor Microsoft on Wednesday announced growth and guidance for its Azure cloud business in the first quarter, exceeding market expectations. Google, the third-ranked cloud computing provider, reported revenue last week slightly below consensus expectations.