Shipping the same stack across six markets.

The products I work on have ended up in six countries. Not by design — that's just where the clients were. But building the same kind of platform for Kuwait, Saudi Arabia, Bangladesh, Mexico, Egypt and the US teaches you what actually has to change and what doesn't.

What changes: payment gateways (Paymob, Stripe Connect, Apple Pay, local banks), currency and formatting, language and direction, and the small cultural defaults — what a 'normal' onboarding looks like, how people expect to pay, what fields are required.

What doesn't change: the architecture. A clean-architecture .NET backend, a well-factored Angular admin, clear boundaries between domain and delivery. When the bones are right, dropping in a new gateway or a new locale is a contained change, not a rewrite.

That's the whole argument for doing the boring parts well. The reward for a disciplined foundation isn't visible on launch day — it's visible the fifth time you extend it without fear.