The company added that revenue growth for the public cloud giant had slowed down a bit.
AWS was critical to Amazon’s profitability in its 2017 fiscal second quarter. Operating income for the cloud business, $916 million, was up 28 percent year over year from $718 million. Meanwhile, operating income for all of Amazon was $628 million.
Amazon’s chief financial officer, Brian Olsavsky told investors during a short question and answer session that AWS’s run rate, which stood at $14 billion in the previous quarter, rose to $16 billion.
“We saw the largest quarter-over-quarter expansion in revenue for that business,” Olsavsky said.
Amazon supported that growth with a 71 percent year-on-year increase in investment to accelerate services and geographic expansion, including the opening of five new sites around the world, Olsavsky said.
In addition, the growth in the number of engineering and salespeople at AWS outpaced that of Amazon’s entire workforce, which numbers about 340,000, he said. AWS revenue for the quarter reached $4.1 billion, up 42 percent over the $2.9 billion reported for the second quarter of 2016, Amazon said.
However, that rise continues a trend of slower growth for AWS. Amazon figures show that revenue growth has slowed for the last six consecutive quarters. However, financial news site CNBC said Thursday that the growth has slowed for the last eight straight quarters, falling from a peak of 81 percent in the second quarter of 2015.