Web, domains and email
hreflang
In short and in plain language
hreflang is a note in the code of a website.
It shows search engines: these pages are the same, just in another language. Or they are for another country.
This can help visitors see the version in their language in search results.
Definition
hreflang is a note in the code of a website. It shows search engines which language or country versions of a page belong together. This can help search results show visitors the matching language version.