A hreflang attribute is there to inform Google about the page architecture of your internationalized website. This way, the search engine understands the structure better and can better assign content and languages to the respective country. The hreflang attribute is therefore suitable for multilingual websites that are active in different markets in different countries or geographical locations. Thus, this attribute is a great help if you want to internationalize your website. Best of all, a hreflang also ensures that the same content in different languages is not considered duplicate content.