Let’s Encrypt SSL Vs Let’s Encrypt Wildcard SSL

What is the difference between the two:  Let’s Encrypt SSL and Let’s Encrypt Wildcard SSL?

Let’s Encrypt SSL – covers only single-domain SSL.

Let’s Encrypt Wildcard SSL – covers not only a single domain, but all of its subdomain too.

Hence, if you plan to use your subdomain as well, you should opt for Let’s Encrypt Wildcard SSL.