Case study · Application modernization
Modernizing a .NET application for cloud-hosted, event-driven delivery.
Enterprise application engineering spanning API modernization, data access, framework upgrades, asynchronous processing, AWS services, observability and controlled deployment practices.
Project context
Modernization inside an application that had to keep delivering.
Application environment
Enterprise service-oriented applications
Engineering scope
Backend APIs, persistence and modernization
Cloud scope
AWS-hosted and event-driven workloads
Delivery scope
CI/CD, infrastructure and deployment validation
The challenge
Modernization has to improve the system without interrupting the business around it.
Framework versions, dependencies, API contracts, data access and deployment all needed to move forward while the services continued supporting active work.
Framework and dependency evolution
API and data-access changes
Asynchronous processing
Cloud operations and deployment reliability
The solution
Modernize the application layer and the delivery environment together.
Application code, persistence, messaging and deployment practices were upgraded as one engineering environment, so changes could be validated and released in a controlled way.
Assess
Upgrade
Refactor
Integrate
Validate
Deploy
Observe
Architecture
A modernization architecture pattern.
Supporting services & delivery foundation
How it works
Change moves through assessment, validation and observation.
Each modernization step is assessed, applied, validated and observed in the running environment before the next one begins.
- C#
- .NET
- ASP.NET Core
- Entity Framework Core
- AWS
- SQS / SNS
- ECS / Fargate
- Terraform
Documented engineering outcomes
- Modernized framework and dependency foundations
- Structured REST service development
- Database and ORM-based persistence
- Event-driven processing capability
- Cloud-hosted application operations
- Improved API documentation
- Controlled deployment and validation practices
The result
Solution Outcome
The application now rests on a modern, maintainable .NET foundation with clearer service boundaries, observable behaviour and controlled release paths.
- A maintainable, modernized application foundation
- Clearer service and module boundaries
- Upgraded frameworks and dependencies
- Asynchronous processing for background work
- Better observability through logs and monitoring
- Controlled, repeatable deployments
- An architecture that is easier to evolve
Connected thinking
Connected thinking for this challenge
Application Modernization
Preserve the business value of critical software while removing the constraint around it.
Cloud & Platform Engineering
Make software and data platforms easier to release, operate and recover.
Technology & IT Services
Strengthen delivery around engineering environments, platforms and client commitments.
Start with the problem
What is making your current application harder to change?
Bring the framework, dependency, deployment or architecture constraint slowing your team down.
You do not need to know the answer yet. Start with the problem.