How do you share authentication across multiple apps?

A single Supabase Auth instance issues app-scoped JWT tokens. Users register once and never have to register again. Custom JWT claims encode platform-specific roles. Shared cookies on the subdomain structure enable cross-platform session detection. Each platform validates tokens independently.

Is shared authentication secure for healthcare apps?

Yes, with proper design. App-scoped tokens prevent one application from reaching another application's data. HIPAA-protected data on OpenMyPro requires MFA and shorter session timeouts. RLS policies enforce data isolation regardless of authentication method. The shared auth simplifies user experience without compromising security.

What authentication provider works best for multi-app ecosystems?

Supabase Auth works well for multi-app ecosystems with its JWT-based authentication, custom claims support, MFA capabilities, and integration with Row-Level Security. Other options include Auth0 and Clerk, but Supabase's database integration makes it particularly suitable when using Supabase for backend.

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Authentication Architecture for Multi-App Ecosystems: Lessons from Blossend

February 27, 2026·Pablo Diaz·Founder & CEO, Blossend Inc

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When you run multiple applications under one parent company, authentication architecture becomes critical. Users should be able to move seamlessly...

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Pablo Diaz

Founder & CEO, Blossend Inc

Ex-Amazon AWS engineer turned 2x founder. Built OpenMyPro healthcare marketplace serving independent founders. CEO of Blossend Inc. Building the future of healthcare discovery.

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