What are the best practices for the architecture design of a multilingual independent website?

When designing a multilingual independent website architecture, core practices include clear URL structure, unified content management, and technical adaptation to balance user experience and search engine friendliness.

URL Structure: Typically, subdirectories (e.g., example.com/es/) or subdomains (e.g., es.example.com) are used. Small and medium-sized sites prioritize subdirectories to centralize domain authority; large multi-regional sites may consider independent domains (e.g., example.es), but maintenance costs should be noted.

Content Management: Ensure unique content across language versions (avoid direct reuse of machine translations), maintain a unified core page structure (e.g., navigation bar, contact information), while allowing regional adjustments (e.g., payment methods, local case studies).

Technical Adaptation: Must deploy hreflang tags to indicate language-region correspondences (e.g., hreflang="es-ES") and ensure bidirectional return of tags (i.e., page A links to page B, and page B also links to page A); servers or CDNs need to support multi-regional acceleration to reduce loading latency in different regions.

User Experience: Language switchers should be fixed in a prominent position (e.g., header), supporting dual identification of national flags and language names; avoid automatic redirection based on IP and provide a manual selection entry.

Recommendation: Initially, test target markets using a subdirectory architecture, use professional translation tools combined with manual proofreading to ensure content quality, and regularly audit the effectiveness of hreflang tags with SEO tools.