Context
One domain can serve multiple markets when the structure is explicit. A simple approach is English at the root and Portuguese under /pt/, with every page clearly identifying its language.
Build the right system
Each equivalent page should reference the other language version with hreflang and use an appropriate canonical URL. This helps search engines understand that the pages are localized counterparts rather than accidental duplicates.
Make it useful
The copy should be written for the audience, not simply translated. Keywords, examples, navigation labels and calls to action can change by market while the brand system stays consistent.
Turn attention into action
The result is one technical foundation with multiple relevant entry points: useful for users, easier to maintain and better aligned with international SEO.