Are you curious about what is a certificate authority ? It refers to an organization or system that issues digital certificates to the requester after validating his/her identity. They are important in building trust between websites, servers, applications, and users. For instance, whenever you are visiting a site using the HTTPS protocol, your web browser will validate the certificate of the site and decide whether or not to trust it. The certificate authority is very important because it ensures that users are able to communicate safely with legitimate sites.