SaaS / Technology · CloudNimbus
SaaS replatform to Kubernetes cuts cloud costs 34% at scale
A B2B SaaS provider migrated a strained monolith to EKS microservices, unlocking 10× scale headroom at lower cost.
34%
cloud cost reduction
10×
peak capacity headroom
45 min → 8 min
deployment time
99.98%
availability post-migration
The Problem
CloudNimbus's monolithic platform on oversized EC2 fleets was buckling: deploys took a full day, peak traffic caused outages, and cloud spend grew 2× faster than revenue.
The Solution
We decomposed the monolith along domain boundaries into 14 services on Amazon EKS, introduced GitOps deployment with ArgoCD, autoscaling tuned to real traffic patterns, and a FinOps program with rightsizing, savings plans and spot capacity for batch workloads.
Architecture
- Amazon EKS with Karpenter autoscaling and spot node pools
- Strangler-fig decomposition into 14 domain services
- ArgoCD GitOps with progressive delivery (canary via Argo Rollouts)
- Aurora PostgreSQL with read-replica strategy
- Datadog observability with SLO-based alerting
ROI
Annualized savings of $1.9M against a $780k program — 2.4× first-year ROI, excluding revenue protected by eliminated outages.
Engagement
- Client
- CloudNimbus
- Industry
- SaaS / Technology
- Service
- Cloud & DevOps
- Timeline
- 9 months for full decomposition; first services live in 8 weeks
Technologies
“RippleCode didn't just migrate us — they rebuilt our engineering culture around shipping safely and fast. Deploys went from feared to boring.”
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