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Multi-tenancy

One application serving multiple separate customers while keeping their data apart.

In a multi-tenant setup, every customer uses the same application and the same infrastructure, but their data is kept separate so nobody can see anyone else's information. This is cheaper and much easier to maintain than running a separate copy of the app for every customer, since one update fixes things for everyone at once. Getting this right, especially around data separation and permissions, is one of the more important decisions when building a SaaS product from the ground up.

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