Common certificate types
There are a number of different types of certificates that you may find yourself needing to publish. As you will see coming up shortly, when you need a certificate that has a list of particular requirements, you can build that certificate template to whatever specifications you like. So, in a sense, there aren't really certificate types at all, but just certificate templates that you scope to contain whatever pieces of information that are needed for that cert to do its job. While this holds true technically, it is generally easier to segment certificates into some different groups, making them more distinguishable for the particular job that they are intended to perform.
User certificates
As the name implies, a user certificate is one used for purposes that are specific to the username itself. One of the platforms that is driving more certificate adoption is the network authentication process. Companies who are looking into stronger authentication in their environments...