Magento 2 allows you to add hreflang tags if you support a wide variety of languages. In addition to noticing Googlebot about pages with the same content, you also need to notify Googlebot of pages in different languages. In addition to noticing Googlebot about pages with the same content, you should notify Googlebot of pages in different languages.
Magento 2 hreflang tags that tell Google what language a particular web page is in so that Google can find the right page in that language when searching for it. In addition to translating content, the hreflang tag may also be used to capture simulated content material. HTML meta tags are essentially what this is used for.
Ranks Higher in SERPs
Googlebot can recognize searches in a certain language using the hreflang tag, so the most relevant content will be displayed to users. In this way, your website will rank highly in different markets.
Improved User Experience
Visitors will definitely visit this page if they visit the website in the language and currency that is most relevant to them. As a result, the customers are happy with the content and the user experience improves.
Ignore Duplicate Content
If the same content has been translated into another language, your site will be downgraded or hidden from search results. Using the hreflang tag, the bot can determine variations between pages.