$AMZN Amazon’s cloud computing revenue:
 
2020: $45.8 billion (estimate)
2019:  $35.0 billion 
2018:  $25.7 billion
2017:   $17.5 billion
2016:  $12.2 billion
2015:    $7.9 billion
2014:   $4.6 billion
2013:    $3.1 billion

Source: Jon Erlichman