Does the Xeams QNAP app package have a built-in web server for installing the Let's Encrypt SSL certificate?

From reading the documentation, it appears that it does when you read HTTP using Xeams  challenge and also:

Option 1 - HTTP Recommended
This option requires you have a web server running on port 80. This can either be Xeams or any other server, such as IIS or Apache.

The above says it can be either Xeams or any other server.

Am I right?

Thank you

ab6540183