Definition
A research method in which representative users attempt to complete realistic tasks with a product or prototype while researchers observe and collect data. Usability tests can be moderated or unmoderated, in-person or remote. PMs use usability testing to identify friction points, validate design decisions, and build confidence that a solution is intuitive before (or after) shipping.
Why It Matters for Product Managers
Understanding usability testing is critical for product managers because it directly influences how teams prioritize work, measure progress, and deliver value to users. PMs use usability testing to identify friction points, validate design decisions, and build confidence that a solution is intuitive before (or after) shipping. Without a clear grasp of this concept, PMs risk making decisions based on assumptions rather than evidence, which can lead to wasted engineering effort and missed market opportunities.
How It Works in Practice
In practice, product teams apply this technique during the discovery phase of product development:
Effective use of usability testing prevents teams from building features based on assumptions and ensures that investment flows toward validated user needs.
Common Pitfalls
Related Concepts
To build a more complete picture, explore these related concepts: Prototype, Design Sprint, A/B Testing, and Tree Testing. Each connects to this term and together they form a toolkit that product managers draw on daily.