Should I add Mandarin / Malay / Tamil for my SG storefront?

Depends on your audience — EN is enough for most SG DTC stores targeting CBD / Orchard professional segments. Add languages strategically:

• Mandarin (zh-Hans-SG) — recommended if you sell to older demographics, FMCG, traditional retail, or cross-border to MY / China. Adds ~20% addressable market in SG.
• Malay (ms-SG) — recommended if you serve halal / Islamic-finance / cross-border to MY / ID. Limited within SG itself but big regional lever.
• Tamil (ta-SG) — niche but valued for inclusion in some segments (services, government suppliers). Often a brand-positioning move.

Magento implementation: separate store_view per language, locale-aware structured data, hreflang per language code (en-SG, zh-Hans-SG, ms-SG, ta-SG). Per-store-view product attributes + URL-slug translations. We can phase this in — ship EN first, layer Mandarin in v2.