From Chaos to Clarity: Building a Secure Cloud Migration Analysis Tool
The Challenge
Our team had two weeks to analyze terabytes of data across on-premises file servers to determine what should migrate to the cloud and what could be archived. Manual analysis wasn't viable, we needed an intelligent, secure solution.
The Solution: A Browser-Based Analysis Tool
We developed a custom HTML application that transforms raw CSV data into actionable migration insights. The tool analyzes multiple files simultaneously, automatically detecting file sizes, types, and names across various formats - all running entirely in the user's local browser with no server required.
Security-First Architecture
"Innovation at CIG happens daily, and with a security-first mindset embedded in everything we do," says Paula, our Cloud Engineer who built the application. "When security is engineered into the application itself, not bolted on later, we unlock resilience, visibility, and confidence for our customers.”
The application's security design provided critical advantages:
Zero data persistence: All processing happens locally; uploaded data is purged when the browser closes
Complete data sovereignty: Customer information never leaves their environment
Minimal footprint: No server infrastructure, cloud dependencies, or installation required
Portable deployment: Runs on any laptop directly in customer environments.
The only output is an optional Excel export, giving customers a record of their analysis while maintaining complete data loss prevention protocols.
Rapid Iteration, Customer-Driven Results
Through 20 versions over two weeks, we evolved from basic functionality to a comprehensive analysis platform. After establishing our foundation, we added enhanced analytics, security features, and customer-requested capabilities including live filtering, file identification, and smart export functionality - all while maintaining our security-first architecture.
The Impact
What started as an impossible deadline became a blueprint for secure, client-side data analysis. Our tool transformed terabytes of unorganized data into clear migration decisions without compromising data security or customer sovereignty.
Key Takeaway: When facing complex data challenges with strict security requirements, sometimes the best solution is building exactly what you need - with security engineered in from day one, not bolted on later.