title: How to Invoke external web service from WSO2 ESB
body: <p>I want to invoke an external web service from WSO2 ESB, is there any way to do it from the proxy service or something else? </p>
  
  <p>The condition is I have a web service deployed in another computer and I want to invoke that web service from the ESB.</p>
  
  <p>Thanks for your help :)</p>