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techMEDIUM2026-05-06 11:13 UTC

How I built subdomain-based multi-tenancy with Next.js 14, Supabase RLS, and Cloudflare — for free

Multi-tenancy is one of those things that sounds simple until you're three hours deep into middleware, wildcard DNS, and Row Level Security policies wondering where it all went wrong. I built it for Pronto — an open-source POS, CRM, and booking system for service businesses. Every business that sign

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