What is a SAN Certificate? – SSL.com

What is a SAN Certificate? A Subject Alternate Name (or SAN) certificate is a digital security certificate which allows multiple hostnames to be protected by a single certificate. A SAN certificate may also be called a Unified Communication Certificate (or UCC ), a multi-domain certificate , or an Exchange certificate.

https://www.ssl.com/faqs/what-is-a-san-certificate/