March 15, 2026·5 min

Building Scalable SaaS with Next.js

Next.jsSaaSArchitecture

Introduction

Building a SaaS platform requires careful planning of architecture, billing, multi-tenancy, and scalability.

In this post, I share my experience building several SaaS platforms with Next.js and Node.js.

Key Architecture Decisions

Multi-Tenant Database Design

The most critical decision is how to isolate tenant data. I've used both shared-database and database-per-tenant approaches...

Subscription Billing

Integrating Stripe for recurring billing with webhook-driven state management ensures reliable payment processing...

Real-Time Dashboards

Using Server-Sent Events (SSE) instead of WebSockets for dashboard updates keeps infrastructure simpler...

Conclusion

Next.js with its App Router provides an excellent foundation for SaaS applications.

The combination of server components for data fetching and client components for interactivity

creates a smooth developer and user experience.