Amazon's Trillion-Dollar Arithmetic Is Bold. Here's What It Would Take

Amazon chief executive Andy Jassy used the company's third-quarter earnings call to set a goal that few companies would dare to state out loud: two of Amazon's businesses, he said, are on a path to each bringing in a trillion dollars in annual revenue. It is an eye-catching claim, and it is also a claim that can be checked with a pencil.

Any projection like this rests on three numbers: where a business's revenue stands today, how fast it grows, and how many years are allowed for the climb. A unit that is far from the trillion-dollar mark needs to compound at a rapid pace for a long time. A unit that is already large can reach the same figure with slower growth, but it has a much bigger base to lift. Small changes in any one of those inputs shift the answer a great deal, which is why the same target can sound credible to one analyst and fanciful to another.

Investors tend to treat long-range remarks like this one differently from formal guidance. Executives use them to signal ambition and to frame how they think about spending, hiring and investment. They are not promises tied to a specific quarter, and they are rarely accompanied by the detailed assumptions that would let outsiders verify them.

For anyone trying to judge the claim, the more useful questions are narrower. Is growth in the relevant units holding steady or accelerating? Are profit margins improving as revenue scales? And how much capital will the company need to keep expanding? Answers to those questions, drawn from the company's filings and earnings disclosures, will say more about whether the target is realistic than the headline itself.

Amazon has a record of setting ambitious goals and then reaching them later than first expected, and of surprising skeptics along the way. Whether this one follows that pattern will depend on the numbers that come in over the next several years.