How to do international SEO

International SEO requires you to signal to search engines which countries and languages your client's content targets, then deliver a technically sound implementation that serves the right content to the right audience. The foundation is choosing a URL structure that Google can properly interpret. You have three main options: country code top-level domains (ccTLDs) like .de or .uk, which send the strongest geographic signal but are expensive and harder to manage; subfolders with language codes like example.com/de/, which keeps everything under one domain and is easier to manage; or subdomains like de.example.com, which offers a middle ground but requires more configuration. Most agencies recommend subfolders or subdomains because they're practical for scaling across multiple markets while maintaining domain authority consolidation.

Beyond URL structure, you'll need to implement hreflang tags correctly on every page that targets multiple regions or languages. These HTML elements tell Google which version of a page is intended for which audience—so if you have English and German versions of the same page, each points to the other via hreflang. Implement them consistently across all variations, whether you're using self-referential tags or cross-linking between languages. Mistakes here are common and expensive, causing content to rank in the wrong regions. Use Google Search Console's international targeting report to monitor for issues. You should also set the preferred domain in Search Console (www vs. non-www) and configure country targeting specifically if you're using subfolders or subdomains.

The technical execution matters as much as the structure. Ensure each language version has its own unique, high-quality content—not machine translations. Implement proper language declarations in your HTML hreflang attributes and Content-Language headers. Configure your server to serve content from the appropriate location if you're using geolocation-based serving. Handle currency and local payment options to improve user experience and conversion rates. Speed matters differently across regions, so consider CDNs that serve content from local servers in target markets. Finally, build local backlinks and citations for each market rather than relying solely on your main domain's authority. This signals genuine local relevance and improves rankings in competitive markets where local competitors have established authority.