Multi-region (US + UK + EU), can one Magento serve all three?

Yes, via Magento Multi-Source Inventory (MSI) + multi-store-view, native since 2.3.0. Architecture:

• Sources (kitchens / warehouses) per region: us_brooklyn, us_la_frozen_warehouse, uk_london, de_berlin_warehouse.
• Stocks (shopping experiences) per region: US stock aggregates US sources; UK stock = UK source only; EU stock aggregates DE + FR + NL sources.
• Store views per region for language, currency, allergen-disclosure list. US store view in USD with FALCPA Big-9 allergens; UK store view in GBP with FSA 14-allergen list; EU store view in EUR with EU 14-allergen list. Same SKU pool, region-specific compliance + pricing.

Per-region payment + checkout: Stripe in US, Stripe + Klarna in UK, Stripe + Klarna + iDEAL in NL/DE. Per-region carrier: FedEx in US, DPD + Royal Mail in UK, DHL + GLS in EU. ShipperHQ rules per store view.

Compliance per region:

• US: FDA + FALCPA + FSMA. State-level wrinkles (CA Prop 65, NYC DOH calorie labels).
• UK: FSA Natasha’s Law, pre-packed-for-direct-sale items need full ingredient + 14-allergen label on the pack itself, not just online.
• EU: Regulation 1169/2011 covers food information to consumers. 14-allergen list. Distance-selling rules for cross-border DTC.

One Magento, three store views, three compliance lists, one operations team. Beats running three separate Shopifys + reconciling inventory + dual catalog edits.