Edge cases, artesano andaluz vs B2B wholesaler catalán vs multi-Iberian (ES + PT + AND)

Three real Spanish-market scenarios we’ve shipped recently, and what changes per scenario:

• Andalusian artisan / small DTC (€100k, €500k GMV), Castellano-only storefront, Bizum + Redsys + PayPal, simple NIF validation, IVA 21% / 10% / 4%, LOPDGDD cookie banner, no marketplaces yet. Tier: Audit + small Build. Hosting: ARSYS or Cloudways. Focus on Core Web Vitals + organic SEO (Andalusian artisans win on local long-tail).
• Catalonia B2B wholesaler (€5M+ GMV), Catalan + Castellano storefront (Catalan required by Llei de Política Lingüística), NIF + CIF + VIES validation, Net-30/60, EU intra-community IVA reverse-charge, Veri*Factu mandatory 2026+, Sage 200 / Holded ERP integration, B2B trade catalogue with account-based pricing. Tier: Build → Custom. Hosting: AWS Madrid or Adobe Commerce Cloud.
• Multi-Iberian (ES + PT + AND, €10M+ GMV), Three storefronts on one Magento backend, Spain (Castellano + Catalán + Euskera + Galego), Portugal (Portuguese, EUR, separate SAF-T PT e-invoice), Andorra (Castellano, no EU IVA, sovereign tax system). Shared catalogue, per-country IVA + payment-method + shipping. Tier: Custom only. Hosting: Adobe Commerce Cloud Frankfurt for multi-region + 24/7 support.

Audit step identifies which scenario fits your store; we tailor scope + pricing accordingly.