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Yes, it is the main non-recommended architectural layout by Google Google's official guidance is here: https://support.google.com/webmasters/answer/182192?hl=en ... scroll down until you find a table. The closest architecture to your described architecture, is the parameter-based one which Google explicitly does not recommend. If Google wouldn't recommend that; without even the shallow parameter-based signifiers, there's little hope that anything would go well I have seen a lot of sites that try to serve different language content from the same URLs and they very rarely do well or perform at all in modern times Read Google's advice and pick from one of their pre-defined, recommended options. Whilst translation plugins can be cheap and useful, they're usually awful for SEO