UX/UI Design – Definition, Use Cases and Best Practices at a Glance
UX (User Experience) design shapes the overall experience of an application; UI (User Interface) design shapes the visual surface. Together they make software intuitive, appealing and effective.
What is UX/UI Design? User Experience & Interface Explained
Design is not how something looks – design is how it works. UX/UI design decides whether users enjoy using software or give up in frustration. Studies show: every euro invested in UX returns €10–100 through higher conversion, lower support cost and stronger loyalty. Good design is a business decision, not a luxury.
This glossary entry for UX/UI Design gives you a clear Definition, practical Use Cases and Best Practices at a glance – with examples, pros and cons, and FAQs.
What is UX/UI Design?
- UX/UI Design – UX (User Experience) design shapes the overall experience of an application; UI (User Interface) design shapes the visual surface. Together they make software intuitive, appealing and effective.
UX design (User Experience Design) covers the full process of designing the user experience: user research, information architecture, interaction design, wireframing, prototyping and usability testing. UX answers: Is the software easy, efficient and pleasant to use? UI design (User Interface Design) shapes the visual surface: colours, typography, icons, layouts, animation and hierarchy.
UI answers: Does the software look professional, consistent and appealing? In practice UX and UI work closely together – in smaller teams often in one person. The design process often follows the double diamond: Discover, Define, Develop, Deliver.
How does UX/UI Design work?
The UX process starts with user research: interviews, surveys and analysis of usage data show what users need and where problems are. From that come personas and user journeys. Wireframes sketch structure and navigation without visual design. Clickable prototypes (e.g. in Figma) are tested with real users.
UI design then gives the validated wireframes a visual identity: design system, colour, typography and interaction patterns. Usability tests validate the result before development.
Practical Examples
Online banking portal after a UX redesign: Abandonment during transfers drops 40% because the flow is reduced from 7 to 3 steps.
E-commerce app with a new UI design system: Consistent buttons, colours and typography build trust and increase conversion by 25%.
B2B SaaS product with a user-centred dashboard: Instead of 50 metrics on one screen, the 5 most important are highlighted – usage frequency rises 60%.
Patient app revised after usability tests: Older users can use the app without guidance thanks to larger buttons, clearer language and simpler navigation.
Typical Use Cases
New product development: UX research and design as the basis for software users actually need
Redesign of existing software: Improving experience based on usage data and feedback
Conversion optimisation: A/B tests and UX analysis to increase sign-ups, purchases or engagement
Accessibility: Designing inclusive interfaces for people with disabilities
Design systems: Building reusable UI components for consistent experiences across products
Advantages and Disadvantages
Advantages
- Higher conversion: Intuitive flows lead to more completions and fewer drop-offs
- Lower development cost: Fixing design issues is much cheaper than fixing them in code
- Loyalty: Good experiences create customers who return and recommend
- Less support: Intuitive software generates fewer questions and complaints
- Competitive advantage: With similar features, better design wins
Disadvantages
- Time: Thorough UX research and testing take time – typically 2–4 weeks before development
- Cost: Professional UX/UI designers are specialists with corresponding rates
- Subjectivity: Design decisions are sometimes driven by taste rather than data
- Stakeholder conflict: Different opinions on design can delay decisions
Frequently Asked Questions about UX/UI Design
What is the difference between UX and UI?
UX (User Experience) shapes the overall experience: How does it feel to use it? Is the flow logical? Can users find what they need? UI (User Interface) shapes the visual surface: colours, typography, layouts, icons. Analogy: UX is the floor plan of a house (rooms, paths); UI is the interior (colours, furniture).
When should you invest in UX/UI?
Ideally from the start – fixing design early is much cheaper. But UX optimisation also pays off later: when conversion is low, users drop off early, support volume is high or feedback is negative, a UX audit is a good first step.
Which tools are used for UX/UI design?
Figma is the current industry standard for UI design, prototyping and design systems. For UX research: Maze (remote usability tests), Hotjar (heatmaps and session recordings), Miro (workshops and user journey mapping). Adobe XD and Sketch are also widely used.
Direct next steps
If you want to apply or evaluate UX/UI Design in a real project, start with these transactional pages:
UX/UI Design in the Context of Modern IT Projects
This page provides a concise definition of UX/UI Design, practical use cases and best practices at a glance — everything you need to evaluate the technology for your next project. UX/UI Design falls within the domain of Design and plays a significant role across a wide range of IT projects. When evaluating whether UX/UI Design is the right fit, organizations should look beyond the technical merits and consider factors such as existing team expertise, current infrastructure, long-term maintainability, and total cost of ownership.
Drawing on our experience from over 250 software projects, we have found that correctly positioning a technology or methodology within the broader project context often matters more than its isolated strengths.
At Groenewold IT Solutions, we have worked with UX/UI Design across multiple client engagements and understand both its advantages and the typical challenges that arise during adoption. If you are unsure whether UX/UI Design suits your particular requirements, we are happy to provide an honest, no-obligation assessment. We analyze your specific situation and recommend the approach that delivers the most value — even if that means suggesting an alternative solution.
For more terms in the area of Design and related topics, see our IT Glossary. For concrete applications, costs, and processes we recommend our service pages and topic pages — there you will find many of the concepts explained here put into practice.
Related Terms
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