The end of the Q3 2017 earnings season highlighted the continued importance of cloud computing for the four largest global cloud providers by market share.

Alphabet, Amazon, IBM, and Microsoft each saw growth in their cloud computing businesses, driving a 40% year-over-year (YoY) increase in cloud infrastructure service revenue, according to Synergy Research.

Here’s an overview of how the four tech giants' cloud businesses performed, as each fights to grab a larger share of the cloud market:

Amazon Web Services (AWS) is in a league of its own.

Despite showing signs of slowing down, AWS thrived during Q3 2017, posting 44% YoY revenue growth, to reach $4.6 billion.

And while that’s down from 54% YoY growth in the year prior, the company still managed to increase its share of the global cloud market, remaining larger overall than the next five largest cloud competitors, according to Synergy Research.

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