Target The Right Countries
If your business proposes country based offers, multilingual SEO will also be an asset. For instance, if you have an online store which targets the US and the UK market, with similar content, you might want to be sure that the right pages will be indexed in the right local versions of the search engines that you target. In the meantime, if you have product pages in the same language, but not dedicated to the same location, setting up the multilingual SEO properly will help you to avoid duplicate content that might prevent your website to perform well in search results.
Note that the international SEO strategy is not limited to websites that offer similar content in the same language. If you have the same offer for Hong Kong and for France, multilingual SEO will also help you to perform better for each search engine.