Cross-Origin Resource Sharing?

Does anyone know how I would implement
Cross-Origin Resource Sharing?
https://www.w3.org/TR/2014/REC-cors-20140116/

I’ve read through the docs a bit and am not following it 100%

This isn’t something you’ll be able to do with RapidWeaver directly: as I understand it, CORS is something your web server needs to be configured to serve in its HTTP headers.

—Nik

Thanks @nikf, I’m reaching out to IFTTT.com to see if they can help support my web app.

Which resources do you want to access from where?