Information Architecture

When it comes to creating a new website or updating your old site to a new one, content management systems (CMS) make it easy for you to manage the content and appearance of your website.  CMS's can be thought of as the "core" or "framework" of your website, serving as the backbone architecture that glues together a web page's text, images, URL path, links, etc.

When it comes to SEO in general, when should I use subdomains vs subdirectories (subfolders)?