When it comes to understanding what is unique content for SEO, you first must understand the basics of how search engines work. In order for websites to rank well in search engine results pages (SERPs), they need to include high-quality and valuable content that is different from anything else on the web. This content is often referred to as “unique”. Duplicate content can hurt a website's ranking because search engines view it as low quality and not beneficial to users. For this reason, it is important for businesses to produce original content that cannot be found anywhere else online. This type of content will help their websites rank higher in SERPs and attract more visitors.