Many SaaS products are no longer designed for one user.
They are designed for teams.
Think of:
Company
├── Owner
├── Manager
├── Developer
└── Staff
Each person works inside the same workspace.
The Core Tables
A simple architecture might contain:
organizations
users
memberships
projects
tasks
The membership table connects users to organizations.
Projects
Projects can belong to an organization:
project_id
organization_id
name
Team members can then work with projects associated with their workspace.
Invitations
A team application normally needs invitations.
The workflow can look like:
Admin invites user
↓
Invitation sent
↓
User accepts
↓
Membership created
Permissions
Different members may have different capabilities.
For example:
Owner → Billing + everything
Manager → Team management
Member → Project access
Database Security
RLS can enforce that users only access records belonging to organizations where they are members.
Production Readiness
Before launch, test:
- Login
- Invitations
- Organization switching
- Permissions
- Data isolation
- Account removal
Final Thoughts
The hardest part of team SaaS is often not the UI.
It is building a clean relationship between users, organizations, memberships and data.
Supabase provides PostgreSQL and authentication capabilities that can support this architecture.