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Case Study

Breaking Free from Legacy Microsoft Workloads

How Clearscale migrated a complex, mission-critical production application to a custom-architected AWS infrastructure with near-zero downtime for global users
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Client Profile

Industry Financial Services
Technology Migration & Modernization API Security
Microsoft Workloads Migration Financial Services

Overview

A financial services technology provider relied on legacy systems with fragile APIs and manual processes that slowed development and created compliance concerns. Clearscale modernized the company’s core applications on AWS by migrating databases and cache, implementing secure APIs, and introducing DevOps automation. The result: a more secure, resilient architecture that improved performance and enabled faster innovation.

Meet Our Hero

This financial services provider needed to modernize critical applications and workloads to stay secure, compliant, and competitive. Legacy infrastructure had become a liability, with fragile APIs that made integrations risky and manual processes that delayed releases. Outdated systems consumed resources and complicated compliance efforts. To better serve its customers and move faster, the company needed a modern AWS foundation that strengthened security and supported ongoing innovation.

The Challenge

Challenge 01

Poor performance during peak usage due to scaling limitations

Challenge 02

Escalating costs tied to restrictive PaaS pricing

Challenge 03

Innovation blocked by technical and cost barriers

Challenge 04

Lack of control over infrastructure and databases

Challenge 05

Dependency on PaaS support for basic operations

The Goal

  • Replace fragile APIs with secure, modern alternatives
  • Migrate legacy databases and cache to cloud-native services
  • Automate deployments with DevOps patterns
  • Improve scalability and resilience of core systems
  • Strengthen compliance and security to build customer trust 

The Solution

Clearscale designed and implemented a modern AWS-based architecture.

Step 01 | Data Source Migration

  • Migrated relational databases to Amazon RDS and Amazon Aurora
  • Replaced cache layer with Amazon ElastiCache
  • Ensured high availability and performance across workloads 

Step 02 | API Modernization

  • Implemented Amazon API Gateway for secure, scalable APIs
  • Used AWS Lambda and AWS Step Functions for event-driven workflows
  • Improved security and simplified integration for third-party partners 

Step 03 | DevOps Automation

  • Deployed CI/CD pipelines with AWS CodePipeline and AWS CodeBuild
  • Automated testing and deployment processes
  • Enabled faster, more reliable releases 

Step 04 | Security & Access

  • Applied IAM roles and policies for least-privilege access
  • Strengthened compliance posture with detailed security controls 

The Impact

Stronger API security, reducing integration risk.

Modernized databases and cache, improving performance and reliability

Automated deployments, accelerating release cycles

Reduced operational overhead, freeing teams to focus on innovation

Improved compliance posture, building trust with financial institution

Turn Cloud Chaos Into Clear Results On AWS

Clearscale helps financial services turn cloud chaos into real results. If your systems are slowing down growth, let’s build a smarter foundation together.

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