How to do information architecture of a UGC based website/app?

1. What is a website information architecture?
2. Which of these should you consider in your information architecture when structuring a site?

What is a website information architecture?

Information architecture (IA) is the practice of structuring and presenting the parts of something — whether that's a website, mobile app, blog post, book, or brick-and-mortar store — to users so that it's easy to understand.

Which of these should you consider in your information architecture when structuring a site?

The goal is to come up with the architecture of the site. The deliverable might include sitemaps, site-flow diagrams, and wireframes to convey how the site will work from a practical perspective. It should determine the big picture, organizing the content on the site to support the tasks that users want to perform.