https://apicourse.com/tags/saas/ Recent content in SaaS on API Course Hugo en-us Sat, 02 May 2026 00:00:00 +0000 https://apicourse.com/multi-tenancy-in-apis-data-isolation-routing-and-tenant-context/ Sat, 02 May 2026 00:00:00 +0000 https://apicourse.com/multi-tenancy-in-apis-data-isolation-routing-and-tenant-context/ <p>Most SaaS APIs are multi-tenant: the same infrastructure serves many customers, each operating in isolation from the others. A user of Tenant A should never see, modify, or even know about the data of Tenant B. This isolation is the foundational guarantee of a multi-tenant system, and it must hold at every layer of the stack — not just at the query level, but at the API design level, the authentication level, and the operational level.</p>