An SSL certificate is a digital certificate that authenticates the identity of a website and creates an encrypted connection between a website and a browser. An SSL certificate is sometimes called an “SSL/TLS certificate” or simply a “cert.”

SSL certificates protect the identity of the remote connection and make online interactions private, ensuring that no one can read or modify content shared over the secure connection except the sender and recipient. An SSL certificate acts like a passport to verify the identity of the website owner, and like a key to keep user data secure via strong encryption.