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What is Multi-Tenant Architecture? - Definition & Meaning

Learn what multi-tenant architecture is, how one application serves multiple customers (tenants), and why it is the foundation of efficient SaaS.

Multi-tenant architecture means one application instance serves multiple customers (tenants). Each tenant has isolated data and configuration but shares the same infrastructure and codebase. This is the standard model for SaaS.

What is What is Multi-Tenant Architecture? - Definition & Meaning?

Multi-tenant architecture means one application instance serves multiple customers (tenants). Each tenant has isolated data and configuration but shares the same infrastructure and codebase. This is the standard model for SaaS.

How does What is Multi-Tenant Architecture? - Definition & Meaning work technically?

Variants: shared DB + tenant_id, schema per tenant, DB per tenant. Security: row-level security, strict query scoping. Challenges: noisy neighbors, compliance.

How does MG Software apply What is Multi-Tenant Architecture? - Definition & Meaning in practice?

MG Software builds multi-tenant SaaS with shared database and tenant_id. We use Row Level Security (RLS) in PostgreSQL for strict data isolation and separate configuration per tenant. Scalability via horizontal scaling of the application layer.

What are some examples of What is Multi-Tenant Architecture? - Definition & Meaning?

  • A project management tool where each company is a tenant with its own projects and users but shares the same application.
  • An ERP SaaS with tenant_id on every table and RLS so tenants only see their own data.
  • A white-label platform where each tenant has its own domain and branding but uses the same backend.

Related terms

saascloud computingpaascybersecurity

Further reading

Knowledge BaseWhat is BaaS? - Definition & MeaningWhat is Cloud Migration? - Definition & MeaningMulti-tenant Architecture Examples - Inspiration & Best PracticesSaaS Platform Examples - Inspiration & Best Practices

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Frequently asked questions

Single-tenant: each company gets its own deployment. Multi-tenant: all companies share one deployment. Multi-tenant is more efficient; single-tenant offers more isolation and control.
Via tenant_id on all tables, Row Level Security or application-level filtering. Every query must be explicitly filtered by tenant. Audit logs help with compliance.
With strict compliance requirements (e.g. healthcare, finance) or when tenants have very large amounts of data. It significantly increases operational complexity.

What is the difference between multi-tenant and single-tenant?

Single-tenant: each company gets its own deployment. Multi-tenant: all companies share one deployment. Multi-tenant is more efficient; single-tenant offers more isolation and control.

How do you guarantee data isolation?

Via tenant_id on all tables, Row Level Security or application-level filtering. Every query must be explicitly filtered by tenant. Audit logs help with compliance.

When do you choose database per tenant?

With strict compliance requirements (e.g. healthcare, finance) or when tenants have very large amounts of data. It significantly increases operational complexity.

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