Amazon reported quarterly results last night that, in the words of one news outlet, stunned Wall Street. What was so stunning about Amazonโ€™s results? The company reported a 15% increase in revenue, but that isnโ€™t so stunning. Wall Street analysts were expecting about $22 billion in revenue and thatโ€™s what Amazon reported.

Did Amazon finally turn a profit on their billions in sales? Nope, that wasnโ€™t it either. On $22 billion in revenue, Amazon lost $57 million in the first quarter. Hardly stunning.

Maybe it was cash flow. Amazon did report a nice jump in free cash flow (cash flow minus capital spending). Free cash flow for the twelve months ending March 31 was $3.16 billion compared to $1.49 billion last year. Thatโ€™s a nice jump, but it hardly justifies the $35 billion jump in market value today. With a $208 billion market value, Amazon is trading at 66X free cash flow. So it probably wasnโ€™t cash flow that stunned Wall Street.

The most likely candidate is Amazonโ€™s Web Services business. For the first time, Amazon broke out the results of its Web Services business, which is the companyโ€™s cloud offering. According to CEO Jeff Bezos, Amazon Web Services is a $5 billion business that is growing fast. In the first quarter Web Services generated $1.5 billion in revenue, a 50% increase from the first quarter of last year. Operating income was $265 million.

Sounds like a decent business and it probably is, but the size of Amazonโ€™s cloud offering isnโ€™t nearly as stunning as just how little profit the rest of Amazonโ€™s business makes. Web Services accounted for 6.9% of revenue in the first quarter and over 100% of operating income.

Thatโ€™s truly stunning and not in a good way.

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