SaaS Infrastructure Challenges
Challenges
- Spinning up isolated per-customer environments at scale
- SOC 2 compliance required for enterprise sales
- Noisy neighbour isolation in shared infrastructure
- Consistent parity across dev, staging, and production
- Feature flags and gradual rollouts across tenants
- On-call burden from environment inconsistencies
CloudFormation Solves
- Terraform modules for per-tenant VPC/namespace provisioning
- SOC 2 compliance scanning on every design before deploy
- EKS namespace resource quotas and network policies
- Config as Code: separate tfvars per environment, same code
- Feature flag infrastructure (LaunchDarkly, Evidently) scaffolded
- Identical infrastructure guaranteed by same Terraform modules
Key Architecture Patterns
1
Cell-Based Multi-Tenant
Each cell serves a customer shard with isolated EKS node pools, dedicated Aurora clusters, and separate S3 buckets. No blast radius across cells.
2
GitOps Deployment Pipeline
GitHub Actions → Terraform plan on PR → Infracost review → tfsec scan → apply on merge → Helm chart update. Zero manual steps.
3
Self-Service Developer Environments
Terraform Cloud workspace per developer. Push a branch, get a fully functional staging environment in under 10 minutes, destroyed automatically on merge.
4
Observability Stack
OpenTelemetry → Prometheus + Grafana via Helm releases in Terraform. Consistent observability from day one across every customer environment.
Business Outcomes
10×
Faster environment provisioning
SOC 2
Ready out of the box
Zero
Environment drift
50%
Fewer on-call incidents
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