Website architecture is which pages exist, what each one is for, and how a person moves between them. It is also how an editor will add the next page without breaking the structure.
Group pages by the way buyers look for you: services, problems, and the few industries you can speak about specifically. Do not create a page only to increase the count.
The address of each page, the title, and the internal links should make that map obvious to a person and to search.