An SSL certificate is used to authenticate a server and enables encrypted communication between the client and your website.
They are most commonly used when collecting confidential information, such as payment/password information, over the internet.
There are various recognised issuing authorities that supply SSL certificates, we use COMODO, and most web browsers will accept these without warnings.
To ensure that an SSL certificate can be trusted the issuing authority will :-
Further information relating to this process, and it’s purpose, can be found at the Comodo website.