How to forward data from site to server if they are not connected (different domain/server)?

Question

JavaScript

Hello IT community, I need your help...
The crux of the matter is this...
Let's say there is a site, a left site on another server/domain, on which we add the . This module displays a modal window, in which, in turn, you need to enter some information, after which this information is sent to my server, where I can manipulate this data.

Please tell me what problems may arise when sending data.
And how best to implement it, that is, what resources are better to use ....

I would be grateful for any help, information, or at least a kick in the right direction ...

Answer 1

Use CORS .