International traffic looks fine until checkout, what do you check first?
I’ve been digging into cross-border checkout lately and there’s one scenario I’m curious how actual store operators diagnose. Say traffic quality looks roughly normal across markets. People are viewing products, adding to cart and starting checkout at a reasonable rate, but completed purchases are noticeably worse in a few countries.
At that point there are so many possible causes that it feels easy to optimize the wrong thing, like unexpected shipping/tax costs, currency or pricing friction, missing local payment methods, 3DS/authentication drop-off or issuer declines and whatever else possible at that point.
For anyone selling internationally, what order do you actually investigate these in?
Do you start with the checkout UX because it’s easiest to control, or do you look at payment acceptance/decline data early on?
Also curious if anyone has ever spent ages optimizing the front end only to find out the real problem was happening at the payment step.
Not looking for payment-provider recommendations, more interested in how people actually troubleshoot this.