The Fundamentals of UX (User Experience) by iterates

6 minutes

UX Design is a method of designing experiences centered on end users. Iterative and value-creating, it relies on the collaboration of the stakeholders of a project to meet a specific need by taking as a starting point a clearly identified problem.

“User experience encompasses all aspects of the end‑users’ interaction with the company, its services, and its products.”
— Don Norman

Understanding this scope is essential: UX covers everything from how a user first hears about a product, through their interaction with it, and even their post-use feelings. It’s a discipline that combines psychology, technology, business, and design.

1. What is UX? Definitions and Key Terms

Here are the core components and terms to know when getting started in UX:

UX vs UI
While often confused, UX and UI are distinct. UX design focuses on the overall experience, how something works, flows, and feels from the user’s perspective. UI, or User Interface, focuses specifically on visual and interactive elements such as buttons, color schemes, layouts, and typography. Think of UX as the blueprint of a house, while UI is the paint, furniture, and decoration. UX determines the logic, UI defines the look.

User Research
This is the foundation of UX work. It involves gathering deep insights into user behaviors, needs, and motivations through methods like interviews, surveys, usability tests, and ethnographic research. The goal is to uncover what users truly want and what they struggle with, often things they don’t consciously express. Without this phase, designs risk being based on assumptions rather than facts.

Personas
Personas are fictional yet realistic profiles representing key user segments. Each persona is based on real user data and includes demographics, goals, frustrations, and behaviors. Designing with personas helps teams keep real people in mind and avoid generalizing the user base into one undefined entity.

User Journey Maps
A user journey map visually outlines the steps users take to accomplish a task or goal within a product or service. It includes their emotions, thoughts, and pain points at each stage. These maps are essential for spotting friction, understanding opportunities, and creating smoother pathways for users.

Wireframes and Prototypes
Wireframes are low-fidelity blueprints of a design, often monochromatic, that show layout and functionality without distractions. Prototypes are more interactive and higher-fidelity versions that allow for testing before development. Together, they let designers quickly visualize ideas and get feedback early.

Usability Testing
This involves observing real users as they interact with your designs, often using screen recordings, heatmaps, or guided tasks. The aim is to identify usability issues and validate assumptions. Good usability testing doesn’t ask “Do you like this?” but rather, “Can you complete the task? Was it easy? What confused you?”

These foundational terms are not just vocabulary, they represent a way of thinking. UX is about putting the user first, constantly questioning assumptions, and committing to an evidence-driven design process. Mastering this mindset is the first step for anyone aiming to work in UX or integrate it into their product development approach.

2. The UX Design Process: Key Stages

UX design is not a straight line from idea to finished product. It’s a circular, iterative process where each stage builds on the previous one and informs the next. This approach ensures that the final product aligns with real user needs, not just internal assumptions or business desires.

Here is a simplified yet powerful model that illustrates the essential stages of the UX process:

Research → Define → Ideate → Prototype → Test → Implement → Iterate

Let’s break down each stage and understand its role in designing effective user experiences.

Research
Everything starts with understanding the people you’re designing for. This phase involves both qualitative and quantitative methods to uncover user needs, goals, behaviors, and pain points. Interviews, field studies, online surveys, competitive analysis, and usability testing of existing solutions are common tools at this stage.

Great UX designers are like detectives during research: they listen, observe, and collect evidence. The goal is not only to understand what users say they want, but also what they do, feel, and struggle with, often revealing unmet needs or opportunities for innovation.

Define
Once you have gathered enough research, you need to turn that raw information into structured insights. This is where synthesis happens. You identify patterns, pain points, and user goals, and translate them into a clear, focused problem statement.

This phase often involves tools like empathy maps, user personas, and “How Might We” questions. These help reframe the challenge in a way that encourages creative thinking and ensures alignment across the team.

Ideate
Now the creative process begins. Ideation is about exploring as many ideas as possible, without judgment. It’s a collaborative and open-ended phase where quantity matters, because sometimes the wildest ideas trigger the smartest solutions.

Workshops are commonly used here, involving techniques like brainwriting, mind-mapping, and sketching. The team generates a wide range of possible solutions, then prioritizes them based on feasibility and impact.

Prototype
With top ideas in hand, it’s time to bring them to life in a quick, low-cost way. A prototype is a preliminary version of your solution, built just enough to test and learn. It could be a paper sketch, a clickable wireframe in Figma, or even a basic interactive flow.

Prototyping helps you validate ideas early, test assumptions, and refine design directions without heavy investment in development.

Test
Usability testing puts your prototype in front of real users. This is where you observe how they interact, where they succeed, where they struggle, and how they feel throughout the process.

Testing doesn’t need a lab, it can be as simple as remote screen sharing or watching someone navigate your design on their phone. What matters is gathering honest feedback and being open to change based on what you learn.

Implement
After refining the prototype based on user feedback, you move into development. This phase involves close collaboration with developers to translate the validated design into a real product. Maintaining the design intent during this transition is critical, so designers often stay involved to ensure usability isn’t lost in translation.

Iterate
UX doesn’t end when the product ships. It’s an ongoing cycle. You continue to collect feedback, track key metrics (like task success or error rate), and improve based on real user behavior. Iteration is what makes UX design resilient and responsive to change.

Each phase in this process is important. Skipping a step, such as testing, can lead to costly redesigns later. Following a structured and iterative UX methodology increases the chances of creating products that truly resonate with users and perform well in the real world.

3. A Day in a UX Workshop

Workshops are an essential part of UX design. They bring together cross-functional teams, designers, developers, stakeholders, and sometimes even users to align around a common goal, explore ideas, and make decisions fast. Unlike long meetings or endless email threads, workshops are hands-on, high-energy, and outcome-focused.

So what does a typical UX workshop day look like? Here’s a realistic timeline based on best practices from digital product teams.

Morning – Setting the Stage

The day begins with introductions and goal setting. Everyone in the room is brought up to speed on the project’s context, the user problem at hand, and the specific outcome the workshop is aiming for. This could be anything from defining a product strategy to designing a new feature or solving a usability issue.

It’s essential to create a safe, creative environment where all ideas are welcome. The facilitator (usually the UX designer or product manager) outlines ground rules and a clear agenda. Then, the team dives into empathy exercises, reviewing user personas, looking at real user quotes, or mapping out user journeys to get everyone into a user-centered mindset.

Late Morning – Exploring Possibilities

With empathy fresh in everyone’s mind, the group begins ideating. Activities like “How Might We” statements, silent brainstorming, or the “Crazy Eights” sketching method help generate a wide variety of ideas in a short time.

This is where quantity trumps quality. Even wild ideas are encouraged, because they can inspire unexpected, innovative directions. The team might post sticky notes to walls, sort concepts into categories, and use dot voting to identify the most promising ideas to move forward with.

Midday – Defining and Refining

After lunch, the team shifts from divergent thinking to convergent thinking. Selected ideas are grouped and refined into more detailed concepts. Breakout groups may work on wireframes, user flows, or value propositions.

At this point, the goal is to start giving shape to a potential solution, what the interface might look like, how it functions, and how it solves the user’s problem. Roles may be distributed for sketching, defining edge cases, or mapping out key screens.

Afternoon – Prototyping and Testing

Now the team builds a quick prototype. This doesn’t have to be high fidelity, a paper mockup or a clickable flow in Figma is often enough. What matters is speed: the prototype should be just realistic enough to simulate how a user would interact with the solution.

Once the prototype is ready, a few team members might role-play user testing scenarios, or better yet, the team invites real users for rapid feedback. These tests reveal usability issues, gaps in the user journey, or design elements that need refinement.

Wrap-Up – Debrief and Next Steps

The workshop ends with a roundtable debrief. What did we learn? What surprised us? What should we explore further? The facilitator documents key outcomes and next actions, which might include further prototyping, user testing, or preparing for developer hand-off.

Participants leave the workshop aligned, energized, and with a shared understanding of the user-centered path forward. For many teams, one well-run workshop can replace weeks of disconnected meetings and misaligned assumptions.

Workshops demonstrate one of UX’s greatest strengths: its ability to create clarity, empathy, and momentum—fast.

4. UX KPIs and Metrics

Designing a great user experience is only half the battle. The other half is measuring it. UX KPIs (Key Performance Indicators) and metrics help teams evaluate whether their design solutions are actually working in the real world. Without metrics, teams risk relying on opinions or aesthetic preferences instead of real user outcomes.

Tracking UX success means identifying the right signals that reflect both usability and user satisfaction. These are the most essential KPIs and metrics used by UX professionals:

Task Success Rate
This is one of the most straightforward and valuable usability metrics. It measures the percentage of users who can complete a specific task correctly without errors. For example: can users successfully book an appointment, add a product to their cart, or submit a form? A high success rate suggests the interface is intuitive and effective.

Time on Task
Efficiency matters. If users can complete a task, but it takes them five minutes when it should take one, that’s a red flag. This metric helps detect design friction and opportunities to streamline workflows. However, context is key, shorter isn’t always better. In some cases, longer time can indicate greater engagement, like reading a blog or exploring a dashboard.

Error Rate
How many mistakes do users make while completing a task? This could include clicking the wrong button, submitting a form with missing data, or getting lost in the navigation. High error rates signal usability issues or design patterns that are not meeting user expectations.

System Usability Scale (SUS)
The SUS is a standardized questionnaire that gives you a usability score out of 100. Users respond to ten statements about the product’s ease of use, consistency, and confidence. It’s fast, widely adopted, and provides a useful benchmark when comparing products or measuring improvement over time.

Net Promoter Score (NPS)
NPS is a single-question metric that asks: “How likely are you to recommend this product to a friend or colleague?” Users answer on a scale of 0–10, and the results are grouped into promoters, passives, and detractors. While it doesn’t measure usability directly, NPS gives a sense of brand and product loyalty, which is deeply tied to user experience.

Retention and Engagement
How often do users return? How much time do they spend using your product? Where do they drop off? These behavioral metrics, often tracked through analytics platforms, show whether your product is becoming part of users’ routines, or if something in the experience is causing abandonment.

Customer Satisfaction (CSAT)
After completing a task or interacting with your support team, users may be asked to rate their experience. These quick satisfaction ratings provide immediate feedback and can uncover pain points before they turn into churn.

Qualitative Feedback
In addition to numbers, words matter. Open-ended responses from users help explain the “why” behind the data. Tools like Hotjar, UsabilityHub, or direct interviews reveal emotional reactions, frustrations, and unmet needs that KPIs alone can’t capture.

When choosing UX metrics, it’s important to align them with business goals. For instance, a SaaS platform might prioritize task completion and onboarding success, while an e-commerce site might track conversion rates and cart abandonment. The most effective UX teams create dashboards that combine multiple indicators, blending performance, satisfaction, and behavior.

Ultimately, measuring UX is about staying accountable to the people you design for. It ensures that your product is not just functional, but truly usable, enjoyable, and meaningful.

5. UX Trends for 2025

As technology evolves and user expectations rise, UX design continues to adapt. Staying ahead in UX means not only mastering timeless principles like usability and accessibility, but also being aware of emerging trends that are reshaping the digital landscape.

Here are the most important UX trends to watch and embrace in 2025:

AI-Powered Personalization
Artificial Intelligence is no longer a futuristic bonus, it’s becoming central to how users experience digital products. AI can now analyze behavior patterns and adapt interfaces in real-time. From personalized content feeds to adaptive dashboards, users are expecting experiences that feel tailor-made. UX designers are collaborating more closely with data scientists to shape these dynamic experiences, ensuring that personalization enhances, rather than disrupts, the user journey.

Voice and Conversational Interfaces
Voice assistants, chatbots, and natural language interactions are becoming mainstream. In 2025, conversational UX will expand beyond support bots to more transactional and decision-making flows, like booking appointments or making purchases. Designers will need to focus on tone of voice, clarity of response, and smooth error handling, ensuring voice interfaces feel human, not robotic.

Accessible and Inclusive Design
Accessibility is no longer a checkbox, it’s a core value. Laws and expectations are pushing digital teams to design for everyone, including users with visual, auditory, cognitive, or motor disabilities. In 2025, inclusive design goes beyond compliance to become an innovation driver. Designers are thinking in terms of flexibility: dark mode, voice navigation, adaptable font sizes, and emotion-sensitive interfaces are becoming standards, not features.

Microinteractions and Subtle Animation
Details matter. Microinteractions, like a button that animates when clicked or a field that glows when successfully completed, create feedback loops that help users understand what’s happening. Subtle animations make interfaces feel alive, responsive, and intuitive. In 2025, we’ll see increased use of animation not for decoration, but to communicate meaning and enhance usability.

Augmented Reality (AR) and Extended Reality (XR)
While still in its early stages for everyday UX, AR is gaining traction in industries like retail, education, and real estate. Try-before-you-buy experiences, 3D product visualizations, and immersive tutorials are becoming more common. Designers must now consider spatial UX. XR is also making its way into enterprise tools and virtual collaboration.

Ethical and Responsible UX
In an age of data scandals, algorithmic bias, and digital fatigue, ethical design is emerging as a priority. In 2025, users demand transparency: What data are you collecting? Why are you showing this recommendation? Designers are being asked to consider long-term impact, avoid dark patterns, and create interfaces that build trust. Privacy, consent, and emotional well-being are no longer niche concerns.

Design Ops and Cross-Team Collaboration
As UX teams scale, maintaining consistency becomes challenging. Design Systems and DesignOps practices help ensure that components, principles, and workflows stay aligned across projects and teams. This operational layer of UX is becoming a strategic function in itself, driving efficiency and cohesion across the product lifecycle.

Staying current with trends doesn’t mean abandoning fundamentals. On the contrary, trends should evolve from solid UX principles. The best UX designers in 2025 are those who combine timeless skills empathy, research, structure with a forward-looking mindset.

6. Launching Your UX Career

Breaking into UX can feel overwhelming at first, especially for those coming from non-design backgrounds. But the beauty of UX is that it’s a field where curiosity, empathy, and a willingness to learn are often more valuable than formal degrees. Many successful UX designers started as artists, marketers, developers, or even psychologists. What they had in common was the motivation to understand users and improve their digital experiences.

Here’s how to build a solid foundation and confidently enter the world of UX design:

1. Learn the Fundamentals
Start by building a strong understanding of usability, design psychology, and the core laws of UX. Laws like Hick’s Law (decision time increases with more choices), Fitts’s Law (larger elements are easier to click), and Jakob’s Law (users prefer familiar experiences) are essential. Resources like “Laws of UX” or the NNGroup website are excellent places to begin.

Also dive into cognitive principles, accessibility standards, and the basics of information architecture. Understanding how users think is key to designing meaningful solutions.

2. Master Your Tools
Designers today need to be fluent in industry tools. Figma has emerged as the leading collaborative design platform. It’s cloud-based, intuitive, and powerful. Other tools like Sketch, Adobe XD, or Axure are also used, depending on the company or project. Learning how to create wireframes, design systems, and clickable prototypes is a must.

But don’t just learn the interface, understand how to structure files, manage components, and prepare hand-offs for developers.

3. Build Projects and a Portfolio
Practice is everything. Start with redesigns of apps you already use. Check user reviews, identify pain points, and sketch improvements. Trace existing designs to understand their structure, then try solving small usability problems on your own.

Your first portfolio doesn’t need to be perfect, it just needs to show your thinking. Focus on documenting the problem, your research, your proposed solution, and how you tested it. Employers are more interested in how you solve problems than in polished visuals.

If you’re lacking real-world experience, volunteer for a nonprofit or collaborate with a startup. Even redesigning a government website or a local business platform can become a powerful case study if you show your process and reasoning.

4. Build Your Network
Connect with other designers on LinkedIn. Join UX communities on Discord or Slack. Attend webinars, meetups, or virtual design critiques. Networking doesn’t just help you get noticed.

Reach out to experienced designers for portfolio feedback or career advice. Most are happy to help if approached with humility and sincerity. Being part of a community also exposes you to different tools, methods, and perspectives.

5. Be Open to Learning and Failing
You will not master UX overnight. You will have designs that don’t work. You’ll feel stuck. You’ll question yourself. That’s part of the process. Every experienced designer has gone through it.

What matters is resilience. Stay curious. Keep practicing. Share your work, ask for feedback, iterate. UX is a discipline where iteration and learning are at the core, but in your own growth.

Courses and bootcamps can help structure your learning, especially if you need accountability and mentorship. But you can also go the self-taught route with free resources, tutorials, and community feedback. The important thing is consistency.

6. Apply for Jobs and Keep Going
Start by targeting internships, freelance roles, or junior UX positions. Tailor your CV and portfolio to each job. Show your design process, not just pretty screens. In your interviews, talk about what you learned, not just what you did.

And most importantly, don’t give up if you get rejected. Every application is a chance to learn and improve. Many people who enter UX are switching careers or starting from zero. You’re not alone, and your background can be an asset.

Conclusion & Call to Action

UX design is more than a job, it’s a mindset. It’s about solving real problems for real people, through design that is intuitive, inclusive, and intelligent. Whether you’re an aspiring designer or a company looking to improve your digital experience, the UX process offers a powerful framework to create better outcomes.

At iterates, we help individuals and organizations design meaningful, effective digital products. From web apps to mobile experiences, from research to implementation, we bring deep UX expertise to every stage of the product lifecycle.

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author avatar
Rodolphe Balay

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