SEO and website architecture
Why is your website architecture important? The first reason is that ideally you should allow your clients to find the quickest access to the data that they are looking for in the fewest number of clicks possible. Critical when you have thousand or even millions of pages of content.
The 2nd reason (and there are many more, but beyond what we wish to cover here), is the search engine bots that scour your website content, if the architecture is poor it then restricts the access and therefore the results that the search engines can deliver.
If this fails then no matter how much time we spend on correcting and resolving issues at a page level if the search engines cannot find it. This also includes the provision of a site map.