Outcome refers to the actual impact of an initiative, as distinct from output, which merely describes the activity or deliverable. This distinction is fundamental for OKRs and for product development in general, because it shifts attention away from what a team does and toward the effect it has on users or customers.
The difference is easy to illustrate. A team ships 50 features in a quarter. That is output — delivery volume. Whether those features actually made a difference is revealed by the outcome, such as an increase in conversion rate from two to four percent. It is entirely possible to produce high output with zero outcome when the wrong things are built. For this reason, Key Results should target outcomes: “raise NPS to 55” rather than “implement a feedback form.” The team retains the freedom to choose the best path to the outcome instead of being bound to a prescribed solution.
The concept gained prominence in product development through Tony Ulwick’s Outcome-Driven Innovation and Marty Cagan’s work. In OKR practice, a consistent outcome orientation is often the biggest shift, because many organizations are accustomed to thinking in outputs.