Case study — Multilingual SEO

Multilingual SEO for a B2B Industrial Website — TR / EN / DE

TR / EN / BG / DE

Independent expertise
Sherife Arabacioglu

  1. 01 / Architecture

    TR / EN / DE

    Reciprocal hreflang, self-referencing canonicals, one sitemap per language

  2. 02 / Index layer

    681 pages indexed

    Templated product and category pages, keyword set built per market rather than translated

  3. 03 / Result

    +425% impressions

    German product pages; 4,726 organic clicks across all three markets, measured in Search Console

The challenge

A B2B industrial equipment company needed full multilingual SEO across three markets simultaneously — Turkish for the home market, English for international reach, and German for DACH-region buyers. Each language version needed its own keyword strategy, product page optimisation, and technical SEO foundation, all without creating duplicate-content conflicts between subdomains.

The approach

StepWhat I did
Keyword research per marketSeparate keyword sets for TR, EN, and DE based on local buyer intent, not direct translation — German industrial buyers search differently than Turkish ones.
Product page structureTemplated product pages with consistent metadata logic, structured specifications, and conversion-aware copy across all three languages.
Category optimisationCategory-level meta titles, descriptions, and intro content aligned to each market's primary keyword cluster.
Hreflang implementationReciprocal hreflang annotations across all three language versions, with self-referencing canonicals to avoid duplicate-content penalties.
Technical SEO foundationSitemaps per language, internal linking maps between language versions, schema markup at product and organisation level.
Content strategyOn-page metadata optimised for each market's search behaviour, with technical and trust signals (ISO/CE references) preserved per language.

The result

4,726 total organic clicks and 681 indexed pages across all three markets, measured in Google Search Console. The German subdomain showed a 425% impression lift on key product pages within the same reporting window — driven by structured content, technical SEO, and keyword targeting tuned to the German B2B buying journey.

All three language versions index cleanly with no hreflang conflicts or duplicate-content flags. Product pages rank for both branded and unbranded queries in their respective markets.

Tools and skills used

SEO Audit · Technical SEO · On-Page SEO · Google Search Console · Content Strategy · Hreflang implementation · International SEO · Multilingual keyword research · Product schema · Category page optimisation