Vitali, how does serving directly from R2 via https work right now under the hood? Is the data replicated across geos? Does all or a portion of it get cached

Vitali, how does serving directly from R2 via https work right now under the hood? Is the data replicated across geos? Does all or a portion of it get cached at a local edge once requested? Does it basically behave as if it was handled by CF cache? These parts are really confusing for me right now.