UX/UI Design, A to Z ┃ 1.1 What Is UX Design?

Welcome to the Free UX/UI Design Course!

From today, I'll be teaching you all the concepts you need to land a job — and thrive — in UX design. Let's talk about what UX design is.

UX Design in One Sentence

UX design (User Experience Design) is the practice of designing the entire experience a user goes through when using a product or service — like an app or a website.

Here, "user experience" means everything a user feels and encounters while using a product or service. And it covers more ground than you might think:

• The visual design of each screen
• How easy the menus and features are to use
• How fast the app responds when you tap a button
• How clearly information is communicated
• Service touchpoints like onboarding and customer support
• And the sense of satisfaction and trust the user feels along the way

All of this falls under user experience.

Let's Make It Concrete: Ordering a Drink on the Starbucks App

That definition can feel abstract, so let's walk through a real example. The screens you're looking at show the process of ordering a drink on the Starbucks app.

The user starts an order from the home screen, selects a store, chooses a pickup option, and browses the menu. They pick a drink, adjust options like size or an extra syrup shot, and complete the payment.

Everything from the moment they open the app to the moment the drink is in their hand — that is the user experience.

And here's the key insight: a pretty screen alone doesn't make a good UX.

• Is the store location displayed intuitively?
• Is the menu easy to browse?
• Are the ordering options clear rather than confusing?
• Is the payment fast and reliable?

Only when these details connect seamlessly does the user get a smooth, satisfying experience. If even one of them breaks down — say, the app lags right at the payment step — every good moment before it can fall apart.

To sum up: UX design is the work of designing the entire journey through a product or service, so users can reach their goals comfortably and successfully.

When a User Makes a Mistake, Whose Fault Is It?

Donald Norman, one of the founding figures of UX, put it this way:

"When users make mistakes with a product, it's the fault of the designer who made it."

At first, that might sound harsh. But here's the point: don't blame the user for the friction or mistakes they experience.

For example, if a user struggles to find the payment button in an app, the takeaway isn't "this person is bad with apps." It's "that button wasn't designed to be noticeable enough."

This is the fundamental mindset of a UX designer. And it's why the core mission of UX design is to discover the problems users face, improve them, and deliver a better experience.

So How Does UX Design Actually Happen?

So what's the process behind this "experience design"? Design teams don't rely on gut feeling — they follow a structured process.

Now, you might hear a different take these days. As AI moves deeper into UX workflows, some designers argue that intuitive judgment has become more important than ever. But here's the catch: that "intuition" is itself a skill that only develops after years of working through the UX process. There's no shortcut to intuition that skips the process. Which means the process you're about to learn is what eventually becomes your intuition.

The big picture looks like this:

Research → Problem Definition → Design → Validation

Broken down a bit further:

1. Deeply understand and empathize with users (empathize)
2. Based on that understanding, define what the real problem is (define)
3. Generate ideas freely to solve the problem (ideate)
4. Build those ideas into prototypes (prototype)
5. Test with real users to validate (test)

The methodology that organizes this process is called Design Thinking — a process for arriving at user-centered solutions, and the foundation of UX design.

Design Thinking consists of four stages: Discover → Define → Develop → Deliver. The visual model that represents this is the Double Diamond, where two diamonds represent the problem space and the solution space.

• The first diamond: explore the problem broadly, then narrow down to define the real problem
• The second diamond: spread out across many possible solutions, then converge on the best one

One thing to remember: this process doesn't end after one pass. The heart of Design Thinking is iteration — continuously improving by incorporating user feedback, again and again.

We'll cover the Double Diamond model in detail in the "Design Thinking" lesson.

What UX Design Aims For: Minimum Effort, Maximum Satisfaction

The goal of UX design is clear: minimize the user's effort, and maximize their satisfaction.

Think of mobile payments. If a single fingerprint or face scan completes the purchase, there's no need to type a password every time. Less input means less effort — and a fast, seamless payment means higher satisfaction.

In this context, UX design places great importance on anticipating and reducing friction.

"Friction" refers to the obstacles, big and small, that stand between a user and their goal. A sign-up form that's too long. Password rules you only learn about after your first attempt fails. Error messages that don't tell you what went wrong.

Ultimately, UX design takes even these fine-grained usability issues into account to create an experience where anyone can reach their goal intuitively and comfortably.

UX Design Is a Team Sport

Collaboration and teamwork matter enormously in UX design.

As real-world projects grow more complex, problems emerge that no single person can solve alone — and design teams create greater value by working together. Meeting the diverse needs of users takes multiple perspectives and ideas. One person's viewpoint is rarely enough to arrive at a complete solution.

That said, there's an interesting shift happening. In the AI era, we're seeing more of what people call "UX unicorns" — individuals who can handle research, UI design, and even coding on their own. The term refers to UX or product designers who span planning, design, and development. The more skills you can take on with the help of AI, the stronger your position in the job market.

Still, the fundamentals haven't changed: UX design is a field where diverse perspectives and areas of expertise need to work in harmony.

UX vs. UI: What's the Difference?

People often mix up UX and UI. Here's the one-sentence version:

UI design is a subset of UX design.

UI design deals with the visible layer — everything the user actually sees, touches, and interacts with. That includes visual elements like buttons, menus, icons, colors, and typography, as well as screen transitions, accessibility, and responsive design.

(For reference: in the broadest sense, a UI is any medium that connects a user to a system. A car's steering wheel or the buttons on an appliance are physical interfaces, and technically UIs too. But when we say "UI design" in everyday practice, we mean the design of digital screens — layout, visual elements, and interaction patterns.)

Picture the Airbnb website. The menus, images, and icons arranged on the screen — that's the UI.

UX design, on the other hand, extends into everything you can't see. Before that screen ever existed, there was invisible groundwork: user research, problem definition, user flow design, prototyping, and user testing. Users never directly perceive this process — but it's this hidden design work that makes a good experience possible.

Here's an analogy: UX is the big picture that designs the entire experience; UI is the touchpoint where that experience meets the user.

And the two are inseparable. Good UI can only emerge when UX research has fully captured user needs — and no matter how solid the research, a poorly executed UI can't deliver a satisfying experience.

Final Thoughts

Have you ever watched someone struggle with an app and thought, "I want to fix that"? If so, you're more than ready to take on the field of UX. That instinct is exactly where every UX designer begins.

Thank you! 🙌