AWS is estimated to be the #3 enterprise storage vendor by revenue in 2018, with storage revenue estimated between $1.1-1.486 billion in Q4 2018. By extrapolating AWS's 52% market share of the IaaS market to the storage-as-a-service market, and estimating that 15-20% of AWS's revenue comes from storage, AWS is calculated to have overtaken traditional storage vendors by revenue. If AWS maintains 35-45% annual growth, it is projected to become the #1 storage vendor by 2020, with over $3 billion in storage revenue, cementing its position as a top storage leader through sustained large investments in R&D.