How Ajax can be related to servlets and how JSF can be related to JSP ? Struts can be related to Ajax or Jsf?
Ajax can be used successfully with JSP. It works fine and at many places i found that performance is good enough.
Since Ajax is called from client side so there is nothing to do with servlets.
Sturts and JSF are way of implementing of MVC architecture of J2EE. There is no relationship between them.
Ajax works with one object XMLHttpRequest. It's performance is good with JavaScript.