---
type: Service
title: Legacy Modernization
description: "Zero-downtime migration with observability & compliance"
resource: "https://www.contextstudios.ai/services/legacy-modernization"
language: en
timestamp: "2026-07-04T20:20:11.671Z"
---

# Legacy Modernization

Enterprise-grade modernization with zero-downtime cutover, SLO-based operations, and GDPR-compliant data migration

Outdated systems slow innovation and cause high maintenance costs. We modernize legacy applications to enterprise standards: Strangler Fig pattern with CDC (Change Data Capture) for consistent data migration, Blue-Green/Canary deployments for risk-free cutover, and full observability (Prometheus, Grafana, Alerting). Every migration ships with defined SLOs/SLAs, documented rollback plans, and runbooks. Security-by-design with IAM/RBAC, Secrets Management (Vault), audit logs, and zero-trust networking. Infrastructure optionally on Kubernetes or Serverless (AWS Lambda/Vercel) with HA/DR concept.

## Perfect For

Ideal for established companies with mission-critical legacy systems that need a controlled, low-risk migration with measurable SLOs. Particularly valuable for CTOs and IT leaders who must meet compliance requirements (GDPR, SOC2, ISO 27001) alongside technical modernization.

## Benefits

- Blue-Green/Canary deployments with automated rollback mechanisms
- CDC-based data migration (Debezium) with dual-write validation and checksums
- SLO/SLA definition with error budgets, alerting, and incident runbooks
- Observability stack: metrics, logs, traces (Prometheus, Grafana, Loki, Jaeger)
- Security-by-design: IAM/RBAC, secrets management, audit logs, zero-trust
- GDPR-compliant data migration with PII handling and data residency compliance
- HA/DR architecture with documented RTO/RPO and disaster recovery tests

Technologies: Next.js 16, Kubernetes, API Gateway, Microservices, CDC/Debezium, Prometheus, Grafana
Price: €30,000 - €100,000+
Delivery: 12-24 Weeks