What is User Experience (UX)?
User Experience (UX) is the holistic experience a user has when interacting with a product, service, or system — encompassing usability, accessibility, emotional response, and outcome achievement. The term was coined by Don Norman at Apple in the early 1990s. UX is a multidisciplinary practice drawing from psychology, design, research, and engineering.
UX vs UI vs Product Design
- UX (User Experience): The end-to-end experience and feeling of using a product
- UI (User Interface): The visual + interactive surface — buttons, layouts, typography
- Product Design: Broader term combining UX + UI + business strategy
- IxD (Interaction Design): Specifically how users interact with elements over time
UX practice components
- User Research: Interviews, surveys, usability testing, ethnography, analytics
- Information Architecture (IA): Site/app structure, content hierarchy, navigation
- Wireframing & Prototyping: Low/high-fidelity sketches and clickable mockups
- Usability Testing: Watching users perform tasks; measuring success/time/errors
- Accessibility (a11y): WCAG 2.1 AA compliance (color contrast, keyboard nav, screen reader)
- Microcopy: Button labels, error messages, empty states, tooltips
UX measurement
- Quantitative: Conversion rate, time-on-task, task success rate, error rate, completion rate
- SUS (System Usability Scale): 10-question survey scored 0-100
- NPS (Net Promoter Score): Likelihood to recommend
- CSAT (Customer Satisfaction): Single-question rating
- CES (Customer Effort Score): How easy was the task
- Funnel analytics: Drop-off at each step
The Don Norman/Jakob Nielsen Heuristics
10 usability heuristics — still the foundational checklist:
- Visibility of system status
- Match between system and real world
- User control and freedom
- Consistency and standards
- Error prevention
- Recognition rather than recall
- Flexibility and efficiency of use
- Aesthetic and minimalist design
- Help users recognize, diagnose, and recover from errors
- Help and documentation
UX legal considerations
- Dark patterns: Manipulative UX (sneak into cart, hidden costs, forced continuity) — EU GDPR + DSA + Türkiye Tüketicinin Korunması Kanunu can apply penalties
- Cookie consent UX: KVKK Kurulu rehberine göre tüm kategori kabul/red eşit görünürlükte olmalı
- Accessibility laws: ADA (US), EAA (EU 2025+), Türkiye Engellilere Yönelik 5378 sayılı Kanun
- Subscription cancellation UX: Must be as easy as signup (“Click to Cancel” rules)
Practical implications for founders
For Türk SaaS şirketleri: (1) UX research’ten kaçınmayın — early-stage haftalık 3-5 kullanıcı görüşmesi 18 ay sonrasını yönlendirir; (2) Accessibility’i sonradan değil tasarım aşamasında dahil edin (retrofit 10x maliyet); (3) Dark pattern’lerden kaçının — uzun vadeli marka değerini bozar + regülasyon riski. Vircon Legal SaaS Terms of Use ve cookie banner UX’in KVKK uyumunda danışmanlık vermektedir.