Passify (passify.info) is a loyalty software-as-a-service (SaaS) platform serving multiple businesses from one codebase: digital passes, customer enrollment, and campaign tools, delivered to each brand under its own identity.
Multi-tenant SaaS is a different engineering problem from a single client app. One flaw is every customer's flaw; one upgrade must land for everyone at once. Building Passify meant building for isolation between tenants, upgrade paths that do not break running customers, and an operations posture where the platform, not a project team, is the product.
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