Mapping a custom URL onto a Google Apps Script URL

[mark337]

We have developed a WebApp using Google Apps Script which has a URL of the form https://script.google.com/a/macros/theotcentre.co.uk/s/uniquestringid/exec

where <uniquestringid> in the above is a fixed value which does not change.

We want to map a user friendly URL such as www.smartaar.our_domain_name onto the above WebApp URL

Is this possible using Google Cloud, how do we do it and can we determine the likely cost

Sorry in advance that this question is starting from a 'low bar'!

Thanks