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Delphi estate: new interfaces without a big-bang rewrite

Extending an existing Delphi suite with REST and batch interfaces to a new CRM—the legacy app stays operational; deeper migration can follow later.

Delphi estate: new interfaces without a big-bang rewrite

Delphi development

The Challenge

Legacy data must sync with CRM

A proprietary data format needed exchange with a SaaS CRM without a risky freeze; a rewrite was not affordable short term.

Our Solution

Adapter layer and controlled releases

We encapsulated import/export in a service module with retries and audit logs; REST endpoints were versioned. Tests validated round trips against reference datasets.

Results

Operations without downtime

The legacy stack stays productive; CRM-led projects receive data on time. Follow-on releases supported from East Frisia.

Features

Feature overview

  • REST adapters with authentication and logging
  • Batch jobs with monitoring and manual intervention
  • Backward-compatible data models for pilot customers

Project Details

Context

ISV with long-lived Delphi product line

Completed

Multiple releases with backward compatibility

Technologies

Delphi 11RESTOpenSSLFireDACWindows Server

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