Channels carry their own currency, locale, and product visibility, so an EU storefront can price and translate differently without a second deployment. Product feeds export the same catalog to the surfaces that need a file.
Choose which products appear in each market, so an item can be live in one channel and hidden in another without duplicating it.
Each channel carries its own currency and locale, with prices and translations resolved per channel at request time.
Merchant feeds are generated from the live catalog, so listings stay current without maintaining an export.
Translations are stored per field in the database, so adding a language doesn't require duplicating templates.