SaaS Cloud Architecture

Multi-tenant data isolation and full-stack security so your SaaS can ship features fast and expand globally with confidence.

What's included

• Multi-tenant data isolation
• Containerized rapid deployment
• Autoscaling for peak loads
• Global access acceleration

The genuinely hard parts of SaaS architecture

Shipping features is not the hard part. Data isolation, cost allocation, and capacity planning are — they all get harder as customers multiply, and none of them is ever "done".

Isolation sets your security floor. Cost allocation tells you which customers are actually unprofitable. Capacity planning determines whether you can deliver on time when the next big account signs. With a handful of customers all three can be handled by hand; past that, they need systems.

Three approaches to multi-tenant isolation

Shared database, shared tables is the most resource-efficient, isolating logically by tenant ID — but a single query missing its filter means cross-tenant data leakage, so all the risk sits on code discipline. Separate database, shared instance isolates better and keeps one tenant's performance problems from spilling over; it is the balance point for most mid-to-large SaaS products.

Separate instances isolate most strongly and suit compliance-sensitive customers, at the highest cost. Real deployments tend to be hybrid: shared instances by default, dedicated deployments for compliance- or performance-sensitive accounts, all tied together by one identity system.

Cost has to break down per customer

The economics of SaaS rest on reuse, but without knowing what each customer consumes you cannot tell whether your pricing is sane. The practical move is tagging resources by tenant, aggregating compute, storage, and traffic by tag, and reviewing gross margin per account on a schedule. Skip this and pricing is guesswork.

Frequently asked questions