Case Study
A leading US based utility embarked on a strategic transformation to modernize its legacy application landscape and align with its long term cloud strategy. The objective was to build a future ready digital foundation that improves scalability, resilience, and innovation while accelerating time to market, reducing technical debt, and adapting to evolving customer and regulatory demands.
Infosys partnered with the client to modernize monolithic, on premises applications into modular, cloud native microservices on AWS. The transformation enabled elastic scalability, faster deployments, and improved operational resilience. Infosys led the transition by implementing API led connectivity to ensure seamless integration across systems, while maintaining business continuity with existing on premises platforms such as mainframe, Oracle, and IBM DB2.
By migrating workloads to AWS, the solution eliminated on premises server and maintenance overhead, significantly reduced deployment downtime, and improved application performance. Automation, DevOps practices, and cloud native services enhanced agility and enabled the utility to deliver digital capabilities faster. The modernized architecture now supports a more connected, scalable, and resilient digital ecosystem—positioning the client for sustained innovation and operational excellence.
50%
Faster time-to-market
50%
Application performance boost
60%
Downtime reduction
0
On-prem maintenance cost
Key Challenges
- Rigid legacy systems that were difficult to adapt to modern needs
- Monolithic architecture that limited flexibility and speed
- Lack of automation, increasing delays and errors
- Skill gaps in cloud native and DevOps technologies
- Organizational resistance slowing down transformation efforts
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Infosys Approach
Modernized applications using cloud native microservices architecture on AWS
Established API led connectivity through Apigee for controlled integrations
Enabled observability using Amazon CloudWatch, AWS Secrets Manager, and Amazon S3
Integrated seamlessly with on premises systems to ensure continuity
Secured access and optimized delivery using Amazon Route 53, Amazon CloudFront, and Amazon Cognito
Deployed containerized microservices on Amazon ECS clusters
Streamed logs via Amazon Data Firehose into Splunk for real time insights
The Solution
Scalable, secure cloud native architecture enabling resilient utility transformation
Infosys delivered a comprehensive cloud native modernization solution that transformed the client’s legacy systems into a scalable, secure, and high performance platform on AWS. Containerized microservices were deployed on Amazon ECS, enabling elastic scaling, high availability, and faster deployments. Load balancing and secrets management ensured optimized performance and secure operations.
API led connectivity via Apigee enabled seamless integration across internal and external systems, while CloudFront and Amazon Route 53 improved content delivery and routing. Observability was strengthened through Amazon CloudWatch and real time log streaming into Splunk using Amazon Data Firehose, enabling proactive monitoring and faster issue resolution.
User friendly interfaces built with Vue.js and Dojo improved usability and supported rapid UI innovation. The solution eliminated on premises infrastructure dependencies while preserving integration with critical legacy systems—delivering agility without disruption.
Business Outcomes
Achieved 50% faster time to market, enabling quicker innovation
Improved application performance by 50%, enhancing user experience
Reduced downtime by 60% through automated deployments
Eliminated on premises server and LDAP maintenance costs
Improved service reliability and business continuity
Benefits
Improved speed, reliability, and cost efficiency through cloud automation and modernized application architecture.
Faster time to market accelerating innovation
Improved application performance enhancing user experience
Automated deployments reducing downtime by 60%
Eliminated server and LDAP maintenance costs
Scalable architecture supporting future enhancements
Improved operational efficiency through DevOps automation
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