The whole category in one page.
BEFORE COMMITTING
A second language doubles your content work permanently.
Translate one page first and see whether it produces anything.
THE DISTINCTION
Multilingual: the same content in different languages.
Multi-region: different prices, delivery and terms, possibly the same language.
Decide which problem you actually have.
THE STRUCTURE TO CHOOSE
Subdirectories, for almost everyone. One site, shared authority, one thing to maintain.
WHAT PEOPLE FORGET TO TRANSLATE
Buttons, form labels, validation messages, emails, error pages.
A site with translated pages and English forms looks half-finished.
FOR THE SWITCHER
Language names in their own language. Never flags alone.
It should lead to the equivalent page, not the homepage.
THE TECHNICAL REQUIREMENT
Each version must declare its language and point at its alternatives.
Without that, search engines show the wrong one.
THE MOST COMMON FAULT
Caching not configured for languages, so visitors receive the wrong one.
NEVER PUBLISH MACHINE TRANSLATION UNCHECKED
Grammatically plausible and culturally wrong damages you more than no translation.