UI/UX design has a very important role in how users can interface with a digital product, as well as how a brand can get perceived. Functional flow, organization, and functionality can greatly enable customers to perform tasks simply and effectively, as when customers are able to grasp a product easily, it results in a higher level of user engagement, which ultimately results in a lower level of bounce rates.
Good user experience inspires trust. Similarities across devices promote familiarity, which boosts confidence and repeat business. UI/UX can also smoothen friction points pertaining to critical flows, whether this is related to sign-up, checkout, or form fills. The less friction, the more completed transactions.
In a commercial context, a great UI/UX increases business efficiency and reduces cost of ownership. This is because a high-quality UI/UX means that there will be a lower volume of support requests related to usability and a shorter development life cycle with less rework. This is also a means of implementing scalable applications that remain usable despite growing complexity.