The ssl certificate is a layer of security between the users of your website and your site. When your users submit information to your site, this information may be compromised in the meantime, this may occur when users of the site use unsafe Internet sites such as public Internet in public places and Etc. are used. The ssl certificate ensures that the information entered by the user is sent to the site in encrypted form and is not compromised in the process.
If you look at the URL of a site like google.com, you see that it started with HTTPS. The letter S at the end of this protocol means that the connection between your device and the site is secure. Secure connections are usually made using the SSL Certificate, which stands for Secure Sockets Layer.
SSL is a security technology used to encrypt information between your device and the server. SSL guarantees that your information will be secure during the transfer route, but there is no guarantee that your information will be secure at the destination. Most sites today have SSL certificates.