Multi-Tenant SaaS Architecture Kit: Tenancy, Teams, Billing, Permissions

A practical architecture kit for technical founders and developers building B2B SaaS products with workspaces, teams, billing, seats, and role-based permissions.

Most SaaS builders start with pages and dashboards, then later discover the hard part: tenant isolation, team roles, seat limits, subscription states, billing access, and permissions.

The Multi-Tenant SaaS Architecture Kit gives you a clean blueprint for building a serious B2B SaaS foundation before you waste months restructuring your app.

This kit is made for indie SaaS founders, freelance developers, agencies, and technical product builders who need to plan or implement a team-based SaaS product with proper tenancy, teams, billing, and permissions.

What you get

- Founder-friendly architecture guide

- Tenancy model decision matrix

- Team/workspace data model guide

- Billing architecture playbook

- RBAC and permissions system guide

- SQL and Prisma data model reference

- API route and tenant policy patterns

- Invite and seat management workflow

- Security and launch readiness checklist

- 14-day implementation roadmap

- Copyable code snippets

- Editable CSV planning templates

- PNG/SVG architecture diagrams

Best for

- B2B SaaS founders

- Freelance developers building client SaaS apps

- Agencies creating SaaS MVPs

- Indie hackers building team-based tools

- Technical product builders planning subscription products

Files included

Markdown guides, CSV templates, TypeScript snippets, Prisma schema, SQL reference, JSON entitlement map, and PNG/SVG visual assets.