Google’s Gary Illyes answered a question about site structure, explaining why a hierarchical site structure is good for SEO and when it’s okay to use a...
Google’s John Mueller discussed heading elements with a member of the SEO community where he affirmed the usefulness of using hierarchical structure when using heading elements....
Google’s John Mueller confirmed I think again, that hreflang link tags do not have to be in hierarchical order. When asked about this, John said that...