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Multi-Tenant Database Sharding Cost Estimator.

Calculate the tipping point for infrastructure spend when SaaS applications abandon a monolithic database for horizontally sharded Multi-Tenant architecture.

## The Multi-Tenant Migration

Most SaaS products begin life using a "Pooled Database"—every client's data lives in the exact same Postgres table, separated only by a `company_id` column. When a massive client runs a complex analytical query, the entire database slows down for everyone else as the CPU pegs at 100%.

### FAQ

**Q: Why is Sharding generally more expensive?**
A: In a "Silo" architecture, you spin up a completely brand-new AWS RDS Database instance for every single client. You gain perfect operational isolation and absolute security guarantees, but you suddenly must pay the "Minimum Base Fee" for 850 individual servers instead of just one.