The design of an interface is what defines the navigation and the structure of its content. Information Architecture (IA) is an essential step in the creation or reformulation of an interface. Good planning of all the flows of information and of the functions of a website makes the final product much more usable and accessible.
A perfect Information Architecture must have the following components:

1. Macro Information Architecture/Structure: structural definition of the large areas of the Website and of the functional groups whether they are content, functions or services.
2. Detailed Information Architecture: detailed definition of the structure of the Website/Portal at the level of navigation pages and content units.
3. Navigation flowcharts: definition of the main flows of information of the website/Portal. Indispensable in very complex websites.
4. Wireframes: definition of functional blocks of each page listed in the detailed Information Architecture. As an outline...
5. Page Layouts: presentation of the graphic layouts resulting from the process of definition of interfaces and applied to the wireframe pages.
6. Transversal Functions: description of basic functions with implication in the information architecture and usability of the website.
7. Rules of Accessibility to consider: a set of principles that should be respected in the technical process of creation of the graphic interfaces of access to the content, services and navigation.