How do you implement Multi-Tenant DI architecture?

Multi-tenant DI isolates tenant-specific dependencies (like databases or feature flags) within a single running application instance.

This is typically achieved by creating a sub-container (or child scope) per tenant. A middleware identifies the tenant from the request (e.g., via host header), creates a tenant-specific DI scope, and overrides specific service registrations for that scope before resolving the request pipeline.