Cross domain content with multiple kirby installations - Again

this topic was once opened:

but never really satisfyingly solved.

So, here is my question: Is it possible to access content from one kirby installation on one domain on another?

My usecase: There is a gallery with events and exhibitions, that should be shown on another website if they are coming up soon.
This other website has a shop, and the latest shop items shall be shown on the gallery website as well…

If you expose your content from the shop via a (custom) API, you can then consume it on the other domain.

See also this post: Share content between websites

Thanks, i think its probably best to go the API road then…