When search engine spiders such as Googlebot crawl a website, they act like browsers inquiring web pages from a site and depend on HTTP for this exchange. This is why it’s important for search engine optimization professionals (SEOs) to understand how the HTTP protocol works and the effect it has on search engines’ crawling and indexing of web pages. In the client-server structure of the World Wide Web, the connections between browsers and sites are managed through the hypertext return protocol (HTTP). This protocol has been around since 1991 and is operate web conventionally. Almost all visitors on the web is managed through HTTP.