I have a simple Web page and input form to embed. Is the HTTP Server or Advanced Web server the right choice, and why?
This depends on your needs such that http server is rather easy to implement however it is limited in functionality however AWS has extended features and is very powerful by means of external cgi and so forth but needs additional work with in the html code by means of form tags before the html code gets converted into C strings. In your case since you need a simple page then you might as well want to stick with the http server implementation.