Consider
Is there a way to make a function justLink that parses a CloudObject[<link>] and returns just the string denoting the link (i.e., removes the CloudObject head?
Let's have look how is a CloudObject represented internally, using FullForm
FullForm@CloudObject["https://www.wolframcloud.com/objects/28cb3105-23a4-419d-9c26-b7badc8517f6"]
(* CloudObject["https://www.wolframcloud.com/objects/28cb3105-23a4-419d-9c26-b7badc8517f6"] *)
Ok, it's just a head and a string, so using First should suffice.
First@CloudObject["https://www.wolframcloud.com/objects/28cb3105-23a4-419d-9c26-b7badc8517f6"]
(* https://www.wolframcloud.com/objects/28cb3105-23a4-419d-9c26-b7badc8517f6 *)