Executive Summary: WorkFlow Pro's single-tenant "silo" model was crushing their margins as they scaled. Varcio re-engineered their backend into a secure, resource-efficient multi-tenant SaaS platform on AWS, reducing infrastructure costs by 35% and enabling much faster client onboarding.
The Challenge
A B2B project management software provider used by mid-market operations teams for complex workflow orchestration. However, they faced significant hurdles:
- Cost Prohibitive: Spinning up new infrastructure for every client was expensive.
- Slow Sales Cycle: Onboarding took weeks of manual provisioning.
- Maintenance Hell: Updating software meant deploying to 18 separate environments.
Our Solution
We redesigned the backend for multi-tenancy with strong isolation:
- Row-Level Security (RLS): Implemented in PostgreSQL to ensure tenant data isolation within a shared database.
- Cognito Custom Attributes: mapped users to tenant IDs automatically.
- Terraform Modules: To automatically provision dedicated resources for premium "Enterprise" tier tenants who still needed physical isolation.
Cost Per Tenant ($)
Cost
Implementation Roadmap
1 Month
Design
Designing the tenant isolation strategy.
2 Months
Migration Scripts
Writing tools to merge databases.
1 Month
Beta Launch
Testing with 5 pilot customers.
1 Weekend
Full Migration
Cutover of all 18 client environments.
Key Results
Infrastructure costs dropped by 35% as resources were shared efficiently. New client onboarding moved from weeks to the same week, allowing the sales team to close deals faster.
"Our margins used to be eaten up by server costs. Now, we add customers without adding overhead. It's pure profit."
CFO, WorkFlow Pro