# Legacy modernization — Use case > Wrap, expose, and retire 20-year-old SOAP, mainframe, and database backends through one gateway — without a rip-and-replace and without rewriting consumers. *Executives · Modernization · For executives* ## Modernize what's behind. Don't break what's in front. Apinizer wraps every legacy backend — SOAP, mainframe, stored procedure, FTP, file drop — and exposes a clean REST or AI-callable surface. Modernize on your timetable, not on a vendor's clock. [Request a demo](https://calendly.com/apinizer/15min) · [Read the docs](https://apinizer.com/developers/docs) --- ## The problem *The problem* ### Rip-and-replace is a fantasy. Coexistence is the only realistic path. The core banking system from 2003 still books transactions. The claim engine in Cobol still pays. The supplier integration over SOAP still ships parts. None of them are going away this fiscal year — but the consumers in front of them increasingly expect REST, OpenAPI, and AI access. Apinizer's job is to make the old behave like the new, without forklifting the old. --- ## Capabilities ### Protocol translation SOAP, gRPC, GraphQL, WebSocket — translated to a clean REST or AI-callable surface on the gateway. Consumers see modern; backends see what they always saw. ### DB-to-API and Script-to-API Stored procedures and SQL queries become endpoints. Groovy or JavaScript scripts ship as managed APIs. The mainframe gets a URL. ### Connector library Database, Kafka, RabbitMQ, FTP, IBM MQ, file systems, and more — drag-and-drop task flows pull legacy data without bespoke integration code. ### Strangler-pattern friendly Route old traffic to the legacy backend; route new traffic to the modern service. Cut over endpoint-by-endpoint until the legacy can be retired safely. ### Modern controls on top Auth, rate limits, transforms, audit, observability — applied at the gateway. Legacy backends get the controls they never had a chance to grow. ### AI on top of legacy LLMs and agents can call the modernized surface — no need to teach a model how to speak Cobol or assemble a SOAP envelope. --- ## Real-world examples ### Banking **Scenario:** Istanbul retail bank retires 92 SOAP endpoints across two years **Outcome:** Each SOAP service wrapped at the gateway as REST. Consumers migrate at their own pace; deprecation headers trigger the cutover on schedule. **Metric:** 92 SOAPs retired ### Insurance **Scenario:** Düsseldorf insurer exposes a 1990s policy engine as OpenAPI **Outcome:** DB-to-API turns 14 stored procedures into endpoints. The claims chatbot calls REST; the engine doesn't notice anything changed. ### Public sector **Scenario:** Stockholm agency wraps a mainframe with an OpenAPI surface **Outcome:** Connector library bridges IBM MQ; Script-to-API handles transformation. New citizen apps consume REST; the mainframe keeps its job. ### Energy **Scenario:** Warsaw utility brings SCADA into a modern integration plane **Outcome:** Operations data exposed as governed REST. Audit and access controls finally cover the part of the estate auditors used to skip. ### Manufacturing **Scenario:** Turin OEM bridges MES file drops to a modern API **Outcome:** Connector watches FTP, lifts each file, exposes a REST endpoint per record. The MES vendor never touched a line; the partners get a real API. ### Telecom **Scenario:** Madrid carrier strangles a 12-year-old billing API **Outcome:** Old traffic to the legacy host; new traffic to the new service. The gateway routes by consumer; cutover finished without an outage window. **Metric:** 0 outage windows ### Government **Scenario:** Baku ministry turns 40 legacy stored procedures into a portal API **Outcome:** DB-to-API exposes each procedure. The developer portal lists them with OpenAPI specs; partners onboard themselves in days. ### Healthcare **Scenario:** Prague hospital wraps an HL7 v2 integration as REST + FHIR **Outcome:** Apinizer translates HL7 messaging into REST. Modern apps speak REST/FHIR; the hospital information system never changes. --- ## Recommended modules - [API Gateway](https://apinizer.com/products/api-gateway) — Multi-protocol runtime that fronts every legacy backend with a modern surface. - [API Creator](https://apinizer.com/products/api-creator) — DB-to-API, Mock API, Script-to-API — every shortcut for turning legacy into managed endpoints. - [API Integrator](https://apinizer.com/products/api-integrator) — Drag-and-drop task flows over 15+ connectors — Kafka, MQ, FTP, file systems, databases. - [AI Gateway](https://apinizer.com/products/ai-gateway) — Agents and LLMs can call the modernized surface — no Cobol, no SOAP envelopes. --- ## Resources - [Legacy modernization patterns](https://docs.apinizer.com/en) — Strangler, wrap-and-replace, parallel-run — the playbooks Apinizer is built to support. - [API Creator](https://apinizer.com/products/api-creator) — DB-to-API, Mock API, Script-to-API in one place — the fastest path from legacy to endpoint. - [API Integrator](https://apinizer.com/products/api-integrator) — Drag-and-drop task flows over 15+ enterprise connectors. - [Banking customer story](https://apinizer.com/solutions/banking) — How Aktif Bank-style institutions retired 90+ legacy endpoints without a rewrite. - [API monetization](https://apinizer.com/solutions/api-monetization) — What a modernized estate gives back to the P&L once partners can self-serve. - [Architecture overview](https://docs.apinizer.com/en/concepts/architecture) — Where the gateway, Creator, and Integrator sit in the topology. --- ## Related use cases - [Unified API & AI platform](https://apinizer.com/solutions/unified-api-ai-platform) — For executives - [API monetization](https://apinizer.com/solutions/api-monetization) — For executives - [DB-2-API](https://apinizer.com/solutions/db-2-api) — For developers - [Connector library (15+)](https://apinizer.com/solutions/connector-library) — For developers --- ## Next step *Coexistence beats rip-and-replace* **Make the old behave like the new.** A 30-minute walkthrough — wrap, expose, route, retire — on a Kubernetes of your choice. [Book a Demo](https://calendly.com/apinizer/15min) · [Read the docs](https://apinizer.com/developers/docs) --- ## Links - Products: https://apinizer.com/products - AI Gateway: https://apinizer.com/products/ai-gateway - Solutions: https://apinizer.com/solutions - Pricing: https://apinizer.com/pricing - Developers: https://apinizer.com/developers - Documentation: https://docs.apinizer.com/index-en - Blog: https://apinizer.com/blog - Contact: https://apinizer.com/company/contact © 2026 Apinizer. All rights reserved.