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SEO/AEO/GEO

International SEO

Hreflang SEO | Multilingual SEO

Portrait of Robert Klimant, co-founder of Roelu Studio
Robert KlimantCo-founder

What is International SEO?

International SEO is the practice of optimizing a website so it ranks in search results across multiple countries and languages. Also called multilingual SEO or hreflang SEO, it involves serving the right content version to users in each region, signaling language and country targeting to search engines, and avoiding duplicate content issues across translated pages. The core technical tool is the hreflang tag.

Why it matters

Most international SEO setups we audit are broken. Companies translate their site, drop it on a subfolder, and hope. Search engines then serve the German version to French users, index the wrong currency, or treat all language versions as duplicate content competing against each other. The fix isn't glamorous: a clean URL structure (subfolders, subdomains, or ccTLDs), proper hreflang implementation, locally relevant content, and localized backlink profiles. Done well, you rank in every market you serve. Done badly, you tank everywhere.

How it works

International SEO starts with a URL structure: ccTLDs (yoursite.de, yoursite.fr), subdomains (de.yoursite.com), or subfolders (yoursite.com/de/). Each has trade-offs around authority sharing and management overhead — you pick one and commit. Then hreflang tags are added to every page, declaring which language and country version each URL serves to search engines. Content is properly localized — not just translated but adapted for the market. Currency, units, examples, idioms, and references all change. Each market needs its own keyword research because search behavior varies wildly between regions. Local backlinks from in-market publications matter. Tools like Ahrefs and Screaming Frog help audit hreflang correctness across the site.

Related terms

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