Domain Validation SSL will result in the HTTPS protocol and a green padlock being displayed in the address field of the browser. SSL will benefit your Google ranking, in fact it is funded by the big IT giants like Google and Mozilla, a simple Google search will confirm the many benefits of SSL.
SSL benefits your domain by encrypting any information that your end-user might submit to your site. When hackers try to steal this information, they can’t gain access because the information is encrypted.
It is a service provided by the Internet Security Research Group (ISRG). They provide digital certificates in order to enable HTTPS (SSL/TLS) for websites, to create a more secure and privacy-respecting Web.