Information Architecture
Information architecture (IA) focuses on organizing, structuring, and labeling content in an effective and sustainable way; it is about helping people understand their surroundings and find what they’re looking for, in the real world as well as online.
Articles

Information Architecture. Basics for Designers.
Many companies don’t see the importance of information architecture because they think it’s impractical. It’s hard to argue that IA takes some time to create it and requires specific skills to do it efficiently. However, powerful IA is a guarantee of the high-quality product since it reduces the possibility of the usability and navigation problems.

Complete Beginner’s Guide to Information Architecture
Information architecture is a task often shared by designers, developers, and content strategists. But regardless of who takes on the task, IA is a field of its own, with influences, tools, and resources that are worth investigation. In this article we’ll discuss what information architecture really is, and why it’s a valuable aspect of the user experience process.

Getting The Website Information Architecture Right: How to Structure Your Site for Optimal User Experiences
If you already have tens of pages on your site, you should do proper information architecture analysis. Guiding people through the vast amount of information on offer is something that requires thought and research. Intuitive navigation doesn’t happen by chance.