In SEO, pinging means to tell search engines about your newly created backlinks so that they are crawled and are counted. Else you will not going to get any benefit from them.Ping submission is helpful for crawling the website and for updating the information in search engines.
Pinging is basically an automatic notification to a search engine that a page has been updated and it should be recrawled. Specifically, this is relevant for social properties like blogs, forums and other web 2.0 sites that are indexed by several search engines that keep a record of the page and the date.
Ping Submission is an off-page SEO strategy that helps your website get indexed faster in Search Engine Platforms. It is one of the best strategies to get high-quality backlinks for your website.