Adding Tenancy to Your ArchitectureThe Two Halves of Every SaaS ArchitectureInside the Control PlaneOnboardingIdentityMetricsBillingTenant ManagementInside the Application PlaneTenant ContextTenant IsolationData PartitioningTenant RoutingMulti-Tenant Application DeploymentThe Gray AreaTieringTenant, Tenant Admin, and System Admin UsersTenant ProvisioningIntegrating the Control and Application PlanesPicking Technologies for Your PlanesAvoiding the AbsolutesConclusion