Website positioning usually means "Search engine optimisation". It represents a set of strategies and very best practices directed at improving upon the visibility of an internet site on serps.   You specify the main URL since the internet search engine could possibly have issue figuring out which one particular need https://www.presta-addons-modules.com/en/seo/prestashop-seo-automatic-hreflang-tags-canonical-tags-on-all-pages.html