Optimizing AWS Infrastructure for a SaaS Provider

Overview

A fast-growing SaaS company faced escalating AWS costs, inconsistent performance, and scalability issues. Yalgar Consulting was brought in to redesign their AWS infrastructure to align with best practices, reduce spend, and support rapid growth.

The Challenge

The client was spending over $25,000/month on AWS but was experiencing:

• Unpredictable downtime during traffic spikes
• Poor utilization of compute and storage resources
• Security misconfigurations
• Lack of centralized monitoring and alerting

Their internal team lacked AWS architectural expertise and needed a partner to modernize their cloud stack while minimizing disruption.

Our Approach

We applied our structured Cloud Optimization Framework, which includes:

1. Infrastructure Audit

• Assessed all AWS services in use (EC2, RDS, S3, Lambda, etc.)
• Identified underutilized instances and cost anomalies
• Reviewed IAM roles, VPC architecture, and compliance gaps

2. Cost Optimization

• Right-sized EC2 instances and reserved capacity where applicable
• Enabled auto-scaling and spot instance strategies
• Moved cold data to S3 Infrequent Access and Glacier

3. Architecture Redesign

• Migrated monolith app to microservices using ECS + Fargate
• Adopted serverless functions for non-critical async tasks
• Set up VPC peering and NAT gateway optimization

4. Monitoring & Security

• Centralized monitoring using CloudWatch + custom Grafana dashboard
• Set up CloudTrail, GuardDuty, and IAM role least-privilege review
• Established automated alerting for cost and usage spikes

The Results

Our AWS Infrastructure Optimization delivered clear and measurable results:

• 34% reduction in AWS monthly costs
• Improved scalability and uptime during peak usage
• Faster deployment cycles and isolated failure domains
• Strengthened cloud security posture

The company now has a cloud-native architecture aligned with AWS Well-Architected Framework and built for long-term scalability.

Why It Matters

Our AWS Infrastructure & Cloud Architecture Consulting isn't just about cost savings—it's about building a foundation for growth, security, and operational excellence. Whether you're struggling with cloud costs, performance issues, or security concerns, our proven approach delivers tangible improvements to your AWS environment.