All Case Studies
Digital Modernisation16 weeksEnterprise Technology
Legacy API Gateway Modernisation
B2B Technology Platform
01The Challenge
A B2B platform processing 50M+ daily API calls was operating on a 9-year-old monolithic API gateway. Deployments required full downtime windows. Scaling was horizontal-only and expensive. A single component failure cascaded across the entire API surface.
02Our Approach
Strangler Fig migration pattern: new microservices were deployed alongside the monolith, with traffic progressively migrated service by service. Each service was independently deployable and scalable before the corresponding monolith component was decommissioned.
03The Solution
A Kubernetes-orchestrated microservices architecture with independent deployability, per-service scaling, circuit breakers, and a new API gateway with rate limiting, authentication, and observability built in.
04Measurable Results
Deployment downtime: 45-minute windows → zero-downtime continuous delivery
API response time p99: 2,400ms → 180ms
Infrastructure cost: reduced by 34% through right-sized service scaling
Service availability: 99.4% → 99.97%
Deploy frequency: monthly → 40+ deploys per week
