For improved SEO and language-aware indexing, the same articles in different languages should be cross-referenced using hreflang tags.

Example: the same article is available in English and German:

* EN: https://support.acme.com/en_US/shipping/import-tax

* DE: https://support.acme.com/de_DE/versand/import-steuern

Both articles should contain the following two lines of metadata:

<link rel="alternate" hreflang="en-US" href="https://support.acme.com/en_US/shipping/import-tax">

<link rel="alternate" hreflang="de-DE" href="https://support.acme.com/de_DE/versand/import-steuern">

More information: https://serpzilla.com/blog/hreflang-tags/