SaaS Architecture Strategy

Acknowledgement: Shared by Peter Bamuhigire, techguypeter.com, +256 784 464178.

Use When

• Designing a new cloud SaaS product or migrating a hosted product to a true SaaS model.
• Selecting tenancy patterns (pooled, siloed, bridge) for a specific business capability.
• Sizing IaaS deployment for a SaaS workload across enterprise tiers (large, mid, SME, long tail).
• Planning scaling and blast-radius containment for production traffic.
• Reconciling residency, isolation, or custom-integration demands from enterprise tenants with a shared platform.
• Aligning the SaaS technical architecture with the operating model (support tiers, on-call, billing, sales motion).

Do Not Use When

• The product is internal-only with a single tenant — use generic application architecture guidance.
• The work is a single component refactor with no tenancy, residency, or consumption-model implication.
• The decision is a vendor selection without architectural commitment; defer until a target architecture is shaped.