How can I connect my UI web pages to the webMethods flow services other than DSP
OR How can I connect frontEnd pages to the webMethods Backend(flow services)?
Just to confirm the above question also means how to consume REST(webMehtods) in HTML pages?
if your services only have simple structured inputs you can just invoke them via URL and pass the inputs as parameters:
/invoke/yourservicename?input1=somevalue&input2=someothervalue.
For more complex structures it might be better to use REST or SOAP-WebServices.