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CloudSaaSEurope

CloudMigrate — Infrastructure Overhaul

Legacy monolith to microservices on AWS — 40% cost reduction

☁️

40%

Cost Reduction

99.99%

Uptime Achieved

5 min

Deploy Time (was 45)

Overview

Migrated a legacy monolith to a microservices architecture on AWS, reducing infrastructure costs and improving uptime to 99.99%.

The Challenge

A 7-year-old monolithic application was costing $28K/month to run, had frequent outages during peak load, and took 45 minutes to deploy. The engineering team couldn't ship features fast enough due to tight coupling.

Our Solution

We decomposed the monolith into 12 microservices, containerized with Docker, orchestrated with ECS, and provisioned with Terraform for reproducibility. A blue-green deployment pipeline reduced deploy time to under 5 minutes with zero downtime.

Key Features

12 independently deployable microservices

Infrastructure as Code with Terraform

Blue-green deployments with automatic rollback

Centralized logging with CloudWatch and Grafana

Auto-scaling policies based on real traffic patterns

Development Timeline

1

Architecture Assessment

3 weeks
2

Infrastructure Design

2 weeks
3

Phased Migration

16 weeks
4

Performance Tuning

2 weeks
5

Cutover & Monitoring

1 week

Project Details

CategoryCloud
IndustrySaaS
RegionEurope
Team Size5 people
Duration5 phases

Tech Stack

AWS ECSTerraformDockerGitHub ActionsCloudWatchGrafanaNode.js

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