Having an international might be success or disaster for your SEO. Bellow you will some best practices and ways to organise and optimise your website.
Types of international sites
If your website offers content in multiple languages. For example a Swiss website could offer it’s content in German, French and Italian.
If you have a website targeting difference countries, for ex a website targeting France and Switzerland(including multiple languages spoken in Switzerland).
When using the same content on another language or region instance of the site you add the rel=”alternate” href=”x” annotation.
Ways your can structure your website
|Subdomains with gTLDS||de.example.com||
|Subdirectories with gTLDs||example.com/de/||