Information Architecture (IA)

Your constantly-updated definition of Information Architecture (IA) and collection of videos and articles

What is Information Architecture (IA)?

Information architecture (IA) is the discipline of making information findable and understandable. It includes searching, browsing, categorizing and presenting relevant and contextual information to help people understand their surroundings and find what they’re looking for online and in the real world.

IA is used in physical spaces like museums or department stores, as well as in websites and applications. For instance, in a natural history museum, you will find fossils from the Jurassic period exhibited together, just as your favorite packet of chips will always be in the snack aisle of your supermarket.  

Information architecture operates from two perspectives:

  1. People perceive information, products and services as places made of language

  2. These places or information environments can be arranged for optimal findability and understandability.

Language in this instance means visual elements, labels, descriptions, menus, content. We can arrange this language so that it works together to facilitate understanding. 

Diagram showing the breakdown of information architecture between content, context and users

© Interaction Design Foundation, CC BY-SA 4.0

Good IA is informed by content, context and users. 


  • What kind of information is available?

  • What relevance does it have to the user?


  • Where is the user seeking out the content?

  • When, why and how is the user engaging with the content?


  • Who is consuming the content?

  • What value does it provide?

  • What preexisting expectations do they have?

In the book Information Architecture for the World Wide Web, Louis Rosenfeld, Peter Morville, and Jorge Arango describe the concept of “information ecology” which comprises users, content, and context “to address the complex dependencies” that exist “in information environments”. The Venn diagram above illustrates the nature of these relationships. “The three circles illustrate the interdependent nature of users, content, and context within a complex, adaptive information ecology.” 

Context relates to business goals, funding, culture, technology, politics, resources and constraints. Content consists of the document or data types, content objects, volume and existing structures. Users comprise the audience, tasks, needs, experiences and how they seek information. 

Good information architecture is informed by all three areas, all of which are in flux depending on the information environment. 

IA and UX design

As with all aspects of UX design, information architecture starts with understanding people—namely, their reasons to use a product or service. A methodical and comprehensive approach to structuring information is needed to make it findable and understandable irrespective of the context, channel, or medium employed by the user.

Once you understand how a user behaves and seeks information, you can design a successful sitemap (like the one shown below), website navigation, user flows and so on. 

diagram showing the sitemap of a bookstore's website

A bookstore’s sitemap

© Visual Paradigm, Fair Use

Designers need to understand the following when designing websites and applications:

  • the information needs of users

  • the site or app’s content

  • the business goals of the website, app, or organization

An information architect’s deliverables typically include:

  • site maps

  • wireframes

  • hierarchies 

  • navigation

  • and metadata. 

Information architecture should be a holistic process, so when a new product or service is being designed, it’s important to start with IA. Good IA serves as the foundation of effective user experience design. 

Learn More About Information Architecture

Card sorting is one of the most popular methods to understand how users classify information. Learn how to conduct effective cart sorts in this Master Class.

The guidebook to information architecture, Information Architecture, 4th Edition.

Better understand the practice of information architecture in relation to UX design.

For principles and the importance of IA in UX design, read this article.

Literature on Information Architecture (IA)

Here’s the entire UX literature on Information Architecture (IA) by the Interaction Design Foundation, collated in one place:

Learn more about Information Architecture (IA)

Take a deep dive into Information Architecture (IA) with our course User Experience: The Beginner’s Guide .

If you’ve heard the term user experience design and been overwhelmed by all the jargon, then you’re not alone. In fact, most practicing UX designers struggle to explain what they do!

“[User experience] is used by people to say, ‘I’m a user experience designer, I design websites,’ or ‘I design apps.’ […] and they think the experience is that simple device, the website, or the app, or who knows what. No! It’s everything — it’s the way you experience the world, it’s the way you experience your life, it’s the way you experience the service. Or, yeah, an app or a computer system. But it’s a system that’s everything.”

— Don Norman, pioneer and inventor of the term “user experience,” in an interview with NNGroup

As indicated by Don Norman, User Experience is an umbrella term that covers several areas. When you work with user experience, it’s crucial to understand what those areas are so that you know how best to apply the tools available to you.

In this course, you will gain an introduction to the breadth of UX design and understand why it matters. You’ll also learn the roles and responsibilities of a UX designer, how to confidently talk about UX and practical methods that you can apply to your work immediately.

You will learn to identify the overlaps and differences between different fields and adapt your existing skills to UX design. Once you understand the lay of the land, you’ll be able to chart your journey into a career in UX design. You’ll hear from practicing UX designers from within the IxDF community — people who come from diverse backgrounds, have taught themselves design, learned on the job, and are enjoying successful careers.

If you are new to the Interaction Design Foundation, this course is a great place to start because it brings together materials from many of our other courses. This provides you with both an excellent introduction to user experience and a preview of the courses we have to offer to help you develop your future career. After each lesson, we will introduce you to the courses you can take if a specific topic has caught your attention. That way, you’ll find it easy to continue your learning journey.

In the first lesson, you’ll learn what user experience design is and what a UX designer does. You’ll also learn about the importance of portfolios and what hiring managers look for in them.

In the second lesson, you’ll learn how to think like a UX designer. This lesson also introduces you to the very first exercise for you to dip your toes into the cool waters of user experience. 

In the third and the fourth lessons, you’ll learn about the most common UX design tools and methods. You’ll also practice each of the methods through tailor-made exercises that walk you through the different stages of the design process.

In the final lesson, you’ll step outside the classroom and into the real world. You’ll understand the role of a UX designer within an organization and what it takes to overcome common challenges at the workplace. You’ll also learn how to leverage your existing skills to successfully transition to and thrive in a new career in UX.   

You’ll be taught by some of the world’s leading experts. The experts we’ve handpicked for you are:

  • Alan Dix, Director of the Computational Foundry at Swansea University, author of Statistics for HCI: Making Sense of Quantitative Data

  • Ann Blandford, Professor of Human-Computer Interaction at University College London

  • Frank Spillers, Service Designer, Founder and CEO of Experience Dynamics

  • Laura Klein, Product Management Expert, Principal at Users Know, Author of Build Better Products and UX for Lean Startups

  • Michal Malewicz, Designer and Creative Director / CEO of Hype4 Mobile

  • Mike Rohde, Experience and Interface Designer, Author of The Sketchnote Handbook: The Illustrated Guide to Visual Note Taking

  • Szymon Adamiak, Software Engineer and Co-founder of Hype4 Mobile

  • William Hudson, User Experience Strategist and Founder of Syntagm

Throughout the course, we’ll supply you with lots of templates and step-by-step guides so you can start applying what you learn in your everyday practice.

You’ll find a series of exercises that will help you get hands-on experience with the methods you learn. Whether you’re a newcomer to design considering a career switch, an experienced practitioner looking to brush up on the basics, or work closely with designers and are curious to know what your colleagues are up to, you will benefit from the learning materials and practical exercises in this course.

You can also learn with your fellow course-takers and use the discussion forums to get feedback and inspire other people who are learning alongside you. You and your fellow course-takers have a huge knowledge and experience base between you, so we think you should take advantage of it whenever possible.

You earn a verifiable and industry-trusted Course Certificate once you’ve completed the course. You can highlight it on your resume, LinkedIn profile or website.

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