Connecting a New App to Legacy Systems: An API Integration Checklist

Most new business apps are not built in isolation. They have to read from an old ERP, push data to an accounting package, or sync with a third-party platform. The integration layer is where many projects slip, because it is planned last. Here is a practical checklist to work through when a new web app, SaaS product or mobile app has to talk to existing systems. 1. Map every system before you…