A search engine result page is a page that is displayed on the search engine once the user searches for a query. This page holds a mix of search results that rank organically, the pages that are paid and promoted, and other features like images, local results, knowledge panels, and more.
The content for every website that reflects on the SERP needs to be crafted nicely. They act as the first point of engagement with the user. The keywords need to be added in the right way to improve the ranking. The optimized websites that appear on the first page of the search engine result page are likely to drive more traffic.