Relevant Team Experience
From legacy SOAP services to modern APIs
A team member architected and developed a serverless AWS integration platform connecting legacy SOAP services with modern JSON-based applications.
UK Public Sector·Legacy Modernization · System Integration · Cloud Architecture · API Modernization
Experience delivered by members of the Avasarant team in previous professional engagements.
Challenge
Modern applications needed reliable access to capabilities still locked behind legacy SOAP services — without exposing those systems directly or abandoning the security and governance expectations of a public-sector environment.
Approach
Design a serverless AWS integration layer that transforms and mediates between SOAP and JSON APIs, using API Gateway, Lambda, DynamoDB and infrastructure as code, with WAF controls for request filtering and IP allowlisting.
- Legacy SOAP
- API Gateway
- Lambda
- Transformation / Mapping
- JSON APIs
- Modern Applications
Technology
- AWS Lambda
- Amazon API Gateway
- Amazon DynamoDB
- AWS WAF
- AWS CDK
- CloudFormation
Selected metrics
200 TPS
performance testing
What this demonstrates
- Legacy-to-modern API integration
- Serverless cloud architecture
- Security controls with AWS WAF
- Infrastructure as Code and scalable performance validation
Type: Relevant Team Experience · Status: Team experience
If this kind of modernization problem sounds familiar, we should talk.
Tell us how the operation runs today. We will respond with a clear next step — not a generic deck.