SaaS Scaling: Zero-Downtime Deployment Architecture
Augmenting the Ops team to move from manual deployments to Kubernetes.
The Challenge
C.CRM was a victim of its own success. Deployments were manual, stressful events that required 2 hours of downtime on weekends. Rollbacks were impossible. The existing team was burnt out firefighting server issues.
The Solution
C.CRM's own platform lead had already decided to move to Kubernetes; what they lacked was the hands to execute it without pulling engineers off feature work. GTEMAS augmented C.CRM's Ops team with 2 Senior DevOps Engineers and a DevSecOps Engineer. Embedded alongside the existing engineers, our team containerized the monolith and migrated it to EKS (Kubernetes), implemented GitOps using ArgoCD so developers could deploy by simply merging a PR, and set up Horizontal Pod Autoscaling (HPA) to handle load automatically. The DevSecOps Engineer built security scanning directly into the CI pipeline, so container images were vetted before they ever reached production.
Architectural Strategy
AWS EKS with Karpenter for node scaling. Terraform for Infrastructure as Code (IaC).
Impact & Achievements
The engineering culture shifted from 'fear of deployment' to 'deployment on demand'. Feature velocity doubled as developers no longer waited for release windows.
Achieved SLA targets
Down from a ~2-hour manual process, now shippable multiple times a day
Infrastructure savings via Spot instances
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