Build a production-ready SaaS application with Next.js-from architecture and authentication to subscriptions, teams, billing, and deployment.
Building a SaaS product requires much more than creating a dashboard and connecting a database. You need secure authentication, tenant isolation, team permissions, subscription billing, product limits, reliable data access, and a production architecture that can grow with real customers.
Build SaaS Applications with Next.js provides a practical, step-by-step guide to putting those systems together in one modern application.
Using Next.js, TypeScript, PostgreSQL, Prisma, Better Auth, and Stripe, you will build the foundation of a multi-tenant SaaS product while learning how each major system connects to the next.
Inside the book, you will learn how to:
Design a practical SaaS architecture and user journeyStructure a maintainable Next.js application with the App RouterAdd authentication, sessions, profiles, and onboardingBuild protected dashboards with user-specific dataCreate organizations, workspaces, and team invitationsImplement roles, permissions, and secure tenant isolationDesign Free, Pro, and Business subscription plansIntegrate Stripe Checkout and the Customer PortalProcess and verify subscription webhooksEnforce plan limits securely on the serverBuild tenant-safe CRUD features with PostgreSQL and PrismaAdd search, filtering, notifications, and activity historyImprove loading, empty, error, and form statesSecure, optimize, deploy, monitor, and maintain the application in productionRather than overwhelming you with unnecessary microservices or premature infrastructure, this book focuses on a clear and maintainable SaaS architecture that can support real-world products.
The example application uses projects as its core product feature, but the patterns are reusable for many SaaS ideas-including productivity platforms, AI applications, analytics tools, business software, collaboration products, and subscription-based services.
Whether you are moving beyond basic Next.js projects or preparing to build your first serious SaaS product, this book will help you understand not only how to implement the individual features, but how authentication, organizations, permissions, billing, tenant data, and product logic work together as one production-ready system.