Overview
Multi-tenancy is the foundation of most SaaS (Software-as-a-Service) applications. It allows the provider to serve many customers using a shared pool of resources, which is highly efficient and cost-effective.
Key Concepts
- Isolation: Ensuring that one tenant cannot see or access another tenant's data.
- Resource Sharing: Tenants share the same database, compute, and storage infrastructure.
- Scalability: The entire system can be scaled to handle more tenants easily.
Advantages
- Lower Costs: Shared infrastructure reduces the cost per customer.
- Easier Maintenance: Updates and patches are applied once to the entire system.
Challenges
- Ensuring strict data security and isolation.
- Managing the 'noisy neighbor' effect where one tenant's high usage affects others.