Optimize Header Tags
Header tags are perhaps the most important aspect of creating structured and recognizable content for search engines. Optimizing your header tags can prove to be very beneficial in making a website SEO-friendly.
The headings which describe the beginning of a particular section in content should have a header tag. For instance, this subheading is an H3 tag, while the title of this page is an H1 tag.
While optimizing your headers, you must incorporate the most relevant keywords into them organically. For instance, the title of your content should have the primary keyword in it.
This incorporation helps search engine crawlers get the context of what your content is about and index the page accordingly. It also helps in increasing your ranking for the particular keyword used in titles and subheadings.
You can use secondary, LSI, or even long-tail keywords in the smaller headings like H2 or even H5. This would help the crawlers in understanding how deep your content goes into the main topic, and the diversity it has.