An SSL or EV certificate is pointed to a single domain name and unique/dedicated IP address. An SSL certificate is set to a unique domain name, company name, address, city, state, country and has an expiration date.
This is great but what happens if you have two or three websites using a CMS/ecommerce on a single IP address and each website needs to have its data secured? You don’t need to buy SSL certificate for each domain if it’s going to be multi website setup. Then what would you do? What is the best solution? The answer is UCC.