What makes SaaS different
A SaaS product is not just a web app with a login. It needs multi-tenant data isolation, subscription billing, usage tracking, admin tooling and a deployment pipeline that handles updates without downtime.
Get these foundations right from day one or you will accumulate technical debt that slows you down later.
Multi-tenant architecture
Each customer (tenant) has isolated data. Postgres row-level security ensures one tenant cannot see another tenant data, even through API queries.
Tenant identification happens at the middleware level - every request is scoped to a tenant before it reaches application logic.
Subscription billing
Stripe handles subscription management, plan upgrades, downgrades, payment failures and invoicing. Webhooks keep your application in sync with billing events.
Usage-based billing for metered features. Free trial management with automatic conversion or expiry.
Authentication and authorisation
Supabase Auth or NextAuth for user management. Role-based access: owner, admin, member, viewer. Row-level security policies enforce permissions at the database level.
SSO integration for enterprise customers when needed.
Deployment and scaling
Vercel for frontend hosting. Supabase or Railway for database. Environment variables for configuration. CI/CD pipeline for automated deployments.
Monitoring, error tracking and alerting from day one - do not wait until you have users to add observability.
Frequently asked questions
How fast can I build an MVP?
A tightly scoped MVP with auth, billing and core features ships in 4-8 weeks.
What tech stack do you recommend?
React + TypeScript frontend, Next.js or Vite, Postgres with row-level security, Supabase for auth and real-time, Stripe for billing.
When should I add billing?
From day one. Free trials are fine, but billing infrastructure should be in place before you have paying customers.
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Ananth N · Madurai, Tamil Nadu · serving Madurai, Coimbatore, Chennai and clients across India · remote-first.
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