Subdomains or subdirectories: Which URL structure should you choose for effective geographical targeting?

Does Google really claim that there's no difference between these structures?

John Mueller's wording suggests that Google can handle any properly configured structure. The engine analyzes geographical signals (hreflang, Search Console, content, local links) regardless of the chosen URL structure.

What truly matters is the consistency of grouping by market. Each geographical area must have a clearly identifiable and isolated set of URLs. Google must be able to unambiguously understand that a set of pages targets a specific country.

Why does this technical neutrality present challenges for practitioners?

Because Google glosses over the non-SEO practical implications of each choice. A ccTLD involves recurring costs, increased DNS management, and legal constraints depending on the extensions. A subdomain fragments domain authority and complicates backlink consolidation.

Subdirectories concentrate authority on a single domain but make geographical targeting in Search Console more laborious. Google claims algorithmic equivalence while omitting the operational realities that often dictate the final choice.

What signals does Google really use to determine geographical targeting?

The URL structure is just one among several clues. Google combines Search Console settings (international targeting), hreflang tags, geographical hosting (a weak signal), local backlinks, and local language content.

If you use subdirectories on a gTLD, you must compensate for the lack of TLD signal with rigorous hreflang and explicit Search Console targeting. With a ccTLD, the signal is more direct but not sufficient: a .fr hosted in the US without French content will remain ambiguous.

• Clear structure mandatory: one market = one isolated and coherent set of URLs (no mixing /fr/ and /en/ in the same tree without logic)
• Hreflang essential: regardless of the structure, hreflang annotations remain necessary to avoid conflicts between language versions
• Search Console by market: configure geographical targeting for each property (subdomain or folder) in international settings
• On-page and off-page signals: language of content, currencies, local backlinks, mentions of physical addresses enhance targeting beyond the URL
• No algorithmic hierarchy: Google treats the three structures equally if the signals are consistent, but the indirect SEO implications (authority, crawl, maintenance) differ significantly

Does this statement reflect field observations?

Yes and no. In purely algorithmic terms, a site properly configured in subdirectories can indeed rank as well as a ccTLD. A/B tests between structures show equivalent results when hreflang and Search Console settings are impeccable.

However, this theoretical equivalence obscures a practical reality: the authority consolidation of subdirectories often offers a tangible competitive advantage. A single domain with 10,000 backlinks generally outperforms 5 ccTLDs with 2,000 backlinks each because authority is less diluted. Google may not explicitly say this, but observations confirm it. [To verify] in ultra-competitive markets where every point of Domain Rating counts.

What use cases invalidate this generic recommendation?

Multi-country e-commerce sites with strong legal constraints (GDPR, VAT, sales conditions) often benefit from ccTLDs to legally isolate each entity. A .de for Germany, a .fr for France allows clear separation of legal responsibilities and personal data hosting.

Markets where ccTLD conveys critical user trust (Russia with .ru, China with .cn) justify the investment despite authority fragmentation. Google can treat a subdirectory fairly, but if Russian users consistently click on .ru in the SERPs, CTR becomes an indirect ranking signal that favors ccTLD.

What does the lack of hierarchy displayed by Google reveal?

This apparent neutrality reflects a willingness for technical flexibility, but also a form of evasion. Google does not want to impose a structure that would complicate migrations or favor large budgets (multiple ccTLDs are costly).

Let’s be honest: the absence of explicit algorithmic preference does not mean the lack of indirect SEO impact. The crawl budget for a single domain is more efficient than scattered across 10 subdomains. The velocity of backlinks on a consolidated domain accelerates overall indexing. Google may treat the structures equally, but the downstream ranking dynamics differ. This nuance is completely bypassed by Mueller.

What criterion should really guide your choice of structure?

First, ask yourself about consolidated domain authority versus market autonomy. If you launch in 5 countries simultaneously with limited resources, subdirectories on a gTLD (.com) concentrate your link-building efforts on a single domain. Each backlink benefits the entire site.

If you manage mature markets with independent local teams, separate budgets, and strict geographical hosting needs, ccTLDs offer total technical and editorial autonomy. Each country becomes its own SEO project, with its own crawl budget and link strategy.

How do you avoid critical configuration errors?

The number one mistake: mixing geographical signals. A subdirectory /de/ with English content, without hreflang, and Search Console targeting set to "all countries" generates ambiguity that Google resolves randomly. Result: low rankings everywhere.

Another frequent trap: duplicating content between versions without correct hreflang. Google then interprets the pages as concurrent duplicate content, not as geographical variants. The risk of cannibalization between /fr/ and /be-fr/ becomes real if hreflang tags are shaky or absent.

Should you migrate an existing structure following this statement?

No, unless there are proven dysfunctions. Migrating structure (from ccTLD to subdirectories or vice versa) involves massive 301 redirects, temporary ranking loss, and backlink dilution. The ROI is rarely positive if the current structure is functioning correctly.

Migrate only if you notice concrete problems: cannibalization between versions, insufficient crawl budget on isolated subdomains, inability to scale to new markets due to lack of ccTLD budget. Otherwise, optimize the existing setup rather than overhaul the architecture. The theoretical gains of a "better" structure rarely offset the migration costs.

• Ensure that each market has an isolated and coherent set of URLs (no language mixing in the same tree)
• Implement hreflang tags on 100% of multilingual pages, including self-reference (x-default if relevant)
• Set up geographical targeting in Search Console for each property (subdomain or folder according to your structure)
• Audit the consistency of language/content/currency: a /de/ must serve German content with euro pricing and German legal mentions
• Consolidate your backlinks on the main domain if you use subdirectories; diversify local sources if you use ccTLDs
• Monitor server logs to identify potential crawl budget issues between subdomains or geographical folders