A guide to tenant isolation models, automated SSL provisioning, and global database connection scoping.
Building scalable B2B SaaS requires a robust multi-tenancy foundation that safeguards data privacy while minimizing infrastructure cost.
### Isolation Models: Shared vs Separate Databases
- **Single Database / Shared Schema**: Best for cost efficiency and thousands of SMB tenants using automatic `tenant_id` query scoping.
- **Database-per-Tenant**: Recommended for enterprise compliance requiring dedicated encryption keys and isolated backup schedules.
### Automated SSL & Custom Domain Routing
Leverage Cloudflare for SaaS or Caddy Server reverse proxies to automatically issue Let's Encrypt SSL certificates for custom client domains (e.g. `portal.clientbrand.com`) with zero manual server configuration.
