In internet terms, a SERP is a Search Engine Result Page.  When discussing how well a website or blog is ranking for a keyword or term different search engines like Google, Yahoo, Bing, etc. are checked. While Google gets the most traffic, it is important to review the results. A SERP is found when a search is made on a search engine page for example if you search for "learn English" in Google, you will get a SERP for that term. In other words, a webpage with different websites and blogs the search engine finds relevant to the topic.