Amazon Web Services: Selling the Tools You Built for Yourself

The story

Around the year 2000, Amazon was mostly known as an online bookstore that was growing into a store for everything. Behind the website was a huge amount of computer work: storing product pages, handling orders, keeping track of warehouses. And it was a mess. The software was tangled together, so changing one part could break another.

Amazon's engineers started untangling it, splitting the system into separate pieces that talked to each other through clear, documented connections called APIs. An API is like a menu at a restaurant: it tells you what you can order and how to ask, without making you go into the kitchen. Amazon's leaders noticed something else too. Every time a team started a new project, it spent months building its own storage, databases and computing setup from scratch. Projects that were supposed to take three months spent three months just on that plumbing.

In 2003, Amazon's top executives met at Jeff Bezos's house to talk about what the company was truly good at. They expected a short discussion. Instead, they realized that, almost by accident, Amazon had become very skilled at running reliable, low-cost computer infrastructure at huge scale. If Amazon's own teams needed simple building blocks for storage and computing, so did thousands of other companies and programmers. Andy Jassy, who led the effort, later said the conclusion seemed obvious looking back.

Amazon Web Services, or AWS, launched its first big service, called S3, on March 14, 2006. S3 let anyone store files on Amazon's computers for 15 cents per gigabyte per month, with no minimum fee and no contract. A few months later, in August 2006, Amazon launched EC2, which let people rent computing power by the hour, starting at 10 cents an hour. Instead of buying expensive servers and hiring people to run them, a two-person startup could rent the same kind of setup Amazon used and pay only for what it needed.

At the time, many people thought it was strange for a retailer to sell computing. But the idea caught on. Startups loved it because they could begin small and grow fast. Later, big companies and governments moved their work onto AWS too. Competitors such as Microsoft and Google built their own cloud businesses to catch up. Jassy said in 2016 that none of the team had predicted how big or how fast it would grow. That year AWS was already running at about $10 billion a year in sales.

By 2024, AWS had net sales of about $107.6 billion and operating income of about $39.8 billion. Amazon's total operating income that year was about $68.6 billion, so the computing business, which began as a fix for Amazon's own headaches, earned more than half of the whole company's operating profit.

The lesson works at any size. A bakery that perfects its delivery routes, or a homeschool family that builds a great system for organizing lessons, may have created something others would gladly pay for. The trick is to notice it, and to build it well enough that strangers can use it without you standing beside them.