SSL means Secure Sockets Layer, and its function is to provide users of a secure web browsing, which allows you to transfer private data online, to know if a web page has its SSL certificate, is that in the bar of addresses or url we see a green candadito, another way to verify is that in the url the web with SSL have at the beginning this address https: //www.domainname and the pages that do not have it appears https: // www. domainname, SSL are used to protect the private data of people accessing these webs, with the guarantee that everything is confidential information, the benefits that can bring to your website is that you provide security, go hand in hand with technology , another very important thing to emphasize is that Google, has preference for users with SSL, in the algorithms of use of Google they have detection of SSL certificates and gives them priority over other results.
