• information architecture as a map for your product.
• Information architecture is made up of three pieces:
  1. Organization: The organization is how different pieces of information connect in a product.
  2. Hierarchy: The hierarchy is often called the “tree structure” and is where a larger category is placed at the top and specific categories related to the overall category are placed underneath. Peer information is placed side by side (or on the same level as each other).
  3. Sequence: The sequence enables users to move through an app via certain orders or steps.

Eight basic principles

1. Object principle: You should view your content as “living” and as something that changes and grows over time.
2. Choice principle: People think they want to have many choices, but they actually need fewer choices that are well-organized.
3. Disclosure principle: Information should not be unexpected or unnecessary.
4. Exemplar principle: Humans put things into categories and group different concepts together.
5. Front door principle: People will usually arrive at a homepage from another website.
6. Multiple classification principle: People have different ways of searching for information.
7. Focused navigation principle: There must be a strategy and logic behind the way navigation menus are designed.
8. Growth principle: The amount of content in a design will grow over time.

Because mobile screens are generally smaller, the challenges that come with creating the information architecture for a mobile app are to

1. consider ways to focus on the essential content and eliminate or move around less important content

2. consider the size and spacing of any touchscreen targets

3. consider ways to make sure the mobile text will be large enough.