First, customer-focused ideas come from all areas within Amazon. Many companies have the “business people” tell the “technical people” what to build. There’s little discussion back and forth, and the teams stay in their own lanes. Amazon is not like this at all. It’s everyone’s job to obsess over customers and think of inventive ways to delight

separable, single-threaded team being run by a single-threaded leader like Tom. As Jeff Wilke explains, “Separable means almost as separable organizationally as APIs are for software. Single-threaded means they don’t work on anything else.”8 Such teams have clear, unambiguous ownership of specific features or functionality and can drive innovations

Speed, or more accurately velocity, which measures both speed and direction, matters in business. With all other things being equal, the organization that moves faster will innovate more, simply because it will be able to conduct a higher number of experiments per unit of time.

Many companies that decide to enter a business area in which they have little internal expertise or capability choose to outsource, as happened in the early days of e-commerce when brick-and-mortar retailers created their first online retail sites. They brought in third-party developers, consultants, and sometimes both. This approach enabled them

Over our long march to building Amazon’s digital business, we proved a powerful lesson: it takes exceptionally patient and unwavering leadership to persevere through the prolonged process of building a new business and navigating through transformative times in an established industry with entrenched interests.

The right input metrics get the entire organization focused on the things that matter most. Finding exactly the right one is an iterative process that needs to happen with every input metric.

When we have invented, our long-term, patient approach—driven by customer need—has been fundamentally different from the more conventional “skills-forward” approach to invention, in which a company looks for new business opportunities that neatly fit with its existing skills and competencies. While this approach can be rewarding, there is a

A well-instrumented two-pizza team had another powerful benefit. They were better at course correcting—detecting and fixing mistakes as they arose.

You’ll notice a pattern of trial and error with metrics in the points above, and this is an essential part of the process. The key is to persistently test and debate as you go. For example, Jeff was concerned that the Fast Track In Stock metric was too narrow. Jeff Wilke argued that the metric would yield broad systematic improvements across the