Source context and central entity
The first check is whether the site agrees with itself about what it is. The source context is the business’s identity and purpose as a source; the central entity is the main subject the site should be known for. I read the homepage, about page, title tags, navigation and structured data side by side. If a moving company’s titles say “moving”, its blog is mostly home décor and its markup describes a generic local business, search engines receive three different stories, and every page below inherits the confusion.