Information Architecture (IA) in UX

Why IA is more important than ever to create products and services that our users will use

An important part of user experience (UX) design is information architecture (IA). IA is the process of deciding how to arrange the parts of something into something that is understandable and meaningful. A good starting place for this article is seeing what the non profit organisation, The Information Architecture Institute, define what IA is:

Information architecture is about helping people understand their surroundings and find what they’re looking for, in the real world as well as online.

In short IA is the process of turning something from confusion into clarity through problem solving and organisation. IA can be often overlooked in the design process as really if the designer has done a good job with the structure and organisation it shouldn’t be obvious to the end user, it is meant to be invisible.

IA is not only about websites and mobile apps it can be applied to daily life and in fact has been practised for thousands of years, as far back as ancient Egypt. An example of this is that in Alexandria the librarians listed contents of the library on a 120-scroll bibliography.

However IA didn’t really start to form until 1970s where XEROX Labs talked about the need for information structuring practices. Then in 1998 the book “Information Architecture for the World Wide Web” was released by authors Peter Morville and Louis Rosenfeld.

Information architecture works across all levels from your high level view of how the website should be structured and flow down to the micro level where you decide say how the search results are ordered as well as the typographically structure.

8 principles of good Information Architecture

  1. Principle of objects: Life is constantly moving, changing and nothing is the same twice. Everything has its own behaviours, attributes and lifecycles. A good IA architect should treat every project uniquely and begin by identifying the different types of content that’ll be shown.
  2. Principle of choices: Users want to be able to make their own decisions, however when presented with too much choice the user can feel overwhelmed causing them to feel flustered. When designing experiences it’s important to reduce options especially if they are doing a set of tasks or are going through a flow like a checkout journey. In short, more is less.
  3. Principle of disclosure: Show just enough information to help people understand what kinds of information they’ll find as they dig deeper. By limiting the information they see at any one time, you allow your user to better absorb what they’re seeing. If users are interested in the information, they can dive deep into it by moving from preview to detailed information.
  4. Principle of exemplars: Show examples of content when describing the content of the categories. For example, when browsing categories on eBay, each category is represented with an image of a product that falls into that category. This makes it easy for users to identify the category.
  5. Principle of front doors: Assume at least half of the website’s visitors will come through some page other than the homepage. That means that every page should include some basic information so they know where they are. It also means every page should include at least top-level navigation so users will know what they can do next.
  6. Principle of multiple classification: Multiple classification means that there should be different ways for your users to browse the content on your site. Different people are likely to use different methods for finding the information on your site. For example, some users may use search function to find the content while others may want to explore through browsing.
  7. Principle of focused navigation: Focused navigation means that navigational menus should not be defined by where they appear, but rather by what they contain.
  8. Principle of growth: Assume the content on the website will grow. The amount of content you have on a site today may be only a small fraction of what you’ll have tomorrow, next week, or next year. Make sure the website is scalable.

“The practice of information architecture is the effort of organizing and relating information in a way that simplifies how people navigate and use information on the Web.”

DSIA Research Initiative

The 3 circles of the “information ecology”

The three circles of information architecture, users, context and content equals information architecture
Louis Rosenfeld and Peter Morville defined the ‘three circles of information architecture’ as content, users and context of use.

Rosenfeld and Morville visualised what makes up information architecture. They identified the 3 main components to IA are:

  1. Users: audience, tasks, needs, information-seeking behaviour, experience
  2. Context: business goals, politics, technology, funding, culture, resources, constraints
  3. Content: content objectives, volume, governance and ownership, funding, culture

They referred to this as the “information ecology”.

Cognitive Psychology

Information architecture uses different parts of cognitive psychology to influence how we structure information.

As an information architect we look at the following for most value:

  • Cognitive load is the amount of information that a person can process at any given time. Keeping in mind the user’s cognitive load helps prevent information architects from inadvertently overloading a user with too much information all at once.
  • Decision making may not sound like psychology, but it is! It’s a cognitive process that allows us to make a choice or select an option. Information architects can help us make decisions by providing certain information at key moments.
  • Mental models are the assumptions people carry in their minds before interacting with a website or application. Information is easier to discover when it is in a place that matches the user’s mental model of where it should be.



Also wireframes should be minimal, don’t worry about the colours just keep it black and white and then if you need to point out a certain area then use a colour to add prominence.



With what you group it could be the grouping your pages together under categories, metadata tags on an ecommerce site or sections within a website.

Hierarchy and navigation

To communicate hierarchy it can be done through size, colour, contrast and placement e.g. the further down on the page it is the less important it is or the smaller the button the less relevant it is.

Content inventory and audit

The purpose of the content audit is ultimately for you to decide and set the goals and scope of the audit. As an example it could be you want to see how up-to-date your content is or if the content is still relevant and in the right place.

The outcome could be you decide what pages should be removed, revised or merged together with another page. Getting that inventory of your content can be painstaking especially if you’ve got hundreds of pages but it can be a good way to get that high-level view and evaluate your content.



IA is less becoming a nice to have and more of a need to have in order for our products and services to be used and survive in an ever competitive market. By adding that structure and organisation you will bring the user experience to another level in which your users will choose you over your competitors.