1. AWS

When Amazon revealed its financials at the start of the fiscal year, the skeptics were silenced.

But in the three quarters that followed the big AWS revelation, revenue and margins for the world's largest cloud only improved. It seems Amazon has inched up in overall market share as well.

Amazon controlled 31 percent of the global cloud market in the fourth quarter and remains a long stride ahead of the next four challengers combined, according to the Synergy report.

Amazon accelerated its growth with a revenue jump of 63 percent year over year.