Related pages are grouped together; for example, your blog homepage links to individual blog posts, which each link to their respective author pages. This structure helps search bots understand the relationship between your pages.
Your site architecture should also shape, and be shaped by, the importance of individual pages. The closer Page A is to your homepage, the more pages link to Page A, and the more link equity those pages have, the more importance search engines will give to Page A.
For example, a link from your homepage to Page A demonstrates more significance than a link from a blog post. The more links to Page A, the more “significant” that page becomes to search engines.