Before going into details we should first understand what SSL certificate and multiple domains are.

SSL Certificate: Secure Socket Layer, commonly known as SSL certificate, provides a security to sensitive data being transferred between a browser and a website.

Multiple Domains: These are basically add-on domains to a primary/parent domain that are distributed among the disk-space/storage space. It gives flexibility to host more than one domain under one server but each sub-domain has its own web file, although they share database. In simple words, these are multiple domains under the same owner.

How SSL certificate guarantees security for different domains?

As security is one of the real concerns, while exchanging or sharing delicate/individual information, we should beyond any doubt that great security guidelines are being taken after, particularly, for the situation where in excess of one domain exists under one server. This can be accomplished through Comodo Multiple Domain SSL Certificate. To guarantee secure transfer, single IP address is issued tothe main server, which will thusly serve all the enrolled domains and sub-domains under a similar proprietor.

Multiple domain SSL Certificates are all around known as UCC (Unified Communications Certificates). These certificates secure domain as well as upto 99 add-on domains and sub-domains. Multiple domain SSL Certificate is perfect for a situation where domain of a host is shared, as it invalidates prerequisite of various issuing of SSL certificates. Rather, just a single SSL Certificate will fill the need.

If an owner owns number of sites, each with different domain name, it will be time consuming, as well as, unfriendly to use different SSL certificates for each and every domain. It will be convenient to use single SSL certificate to provide internet security to all the domains and sub-domains owned by a same owner. A single SSL certificate will provide protection to all the registered domains and sub-domains with a single IP address.