Hi Ihmran,
You can do several ways:
In a Script activity:
This way below, no control on the target, _self is used (as for the standard url of an End activity) so the idea is a page without an iframe:
response.sendRedirect("http://www.yourcompany.com/page_with_no_iframe")
Or a variant I use whenever possible in the company web site, when there are several back-and-forth between the company web site and the webApp and that the company web site can manage URL GET parameters:
I store the web site url in a variable:
ctx.vars.pageRedirection = "http://www.yourcompany.com/page_with_iframe"
then script activity for ending/redirection:
response.sendRedirect(ctx.vars.pageRedirection + "?" + request.queryString)
and so you can add a parameter for indicating to the parent what to do (as not displaying the iframe, reducing the size etc).
The same, but with control on the appearence:
window.open("https://www.yourcompany.com/page_with_no_iframe","_blank","toolbar=yes, location=yes, directories=no, status=no, menubar=yes, scrollbars=yes, resizable=no, copyhistory=yes, width=400, height=400");
I tried with _parent instead, but I had some issues.
In the factory End activity, by not using the standard Url redirection, you can also place standard html redirection but with very few control on the result, not so good for your use case.
Regards
J-Serge