Shared
Fastest to launch
Useful early when product fit matters more than isolation depth, but it becomes harder to stretch safely as requirements sharpen.
Tenant Isolation Strategies
Choose a tenant isolation model that matches customer risk, not just engineering convenience.
Tenant isolation is not a moral argument between shared and isolated databases. It is an architecture tradeoff. The best strategy is usually mixed: simple tenants can share simpler infrastructure, while premium or regulated tenants get their own database surface.
Dedicated
Healthier for premium tenants
Stronger for customers with higher spend, residency concerns, or workloads that should not compete with everyone else.
Hybrid
Usually the right long-term answer
Keep the easy tenants easy, then promote the tenants that need more isolation instead of contorting the whole system for all of them.
What Helps
Isolation gets much easier when branching and inspection workflows are already built in.
The practical burden of isolated tenants drops when teams can branch their database surface quickly, inspect the branch over GraphQL, and run support or rollout workflows without standing up a second temporary stack every time.