17th of 20 Questions.
What is Server Name Indication in SSL?
Server Name Indication (SNI) is a TLS extension that allows a client to specify the hostname it is trying to connect to at the start of the TLS handshake, enabling a load balancer to serve multiple SSL/TLS certificates for multiple domains on a single listener [citation:1][citation:2].
Server Name Indication (SNI) is an extension to the TLS protocol. It allows a client to indicate which hostname it is attempting to connect to during the initial TLS handshake. This enables a load balancer to present multiple SSL/TLS certificates on the same listener, supporting multiple secure websites behind a single IP address and port [citation:1][citation:2].