Thank you for this breakdown of the various components, @Minh_Nguyen. I’ve noticed some inconsistency with the tile updating and I was hoping one of the tables in your post would direct me to the right place to report an issue. I’m still not quite sure though.
Here is some forest detail I recently added. Some tiles have updated since but others have not (yes, I have cleared my browser cache). The result is inconsistent views like this, where new tiles with more forest detail are co-mingled with less detailed, older tiles:
Would this be something to report to the tile host (OSMF OWG), the tile configuration (Spirit Shortbread), or the tile generator (Tilekiln)?