USABILITY VS USEFULNESS: KEY ASPECTS OF A PRODUCT'S UX

Summary from the TLDR Design newsletter

Usability focuses on making products easy and intuitive to navigate, while usefulness ensures they solve real problems worth addressing—both are essential for creating products users adopt and retain. Utility (features), usability (ease of use), and usefulness (utility + usability) must work together, with testing methods like prototype evaluation, heuristic reviews, and session recordings helping identify friction before and after launch.