In one sentence
A connection that lets software systems exchange approved data and invoke supported operations.
An API integration connects software systems so they can exchange data or trigger actions. When a CRM receives a lead and an approved messaging service sends a welcome text, an API integration carries the relevant information between them.
Many business tools publish APIs, but production access, supported resources, write operations, authentication, approval, fees, and contractual limits vary by vendor and customer deployment. Certified health IT products may expose standardized access for defined use cases without supporting every write operation an automation needs.
A custom API integration can provide direct control over mapping, validation, failure handling, idempotency, logging, and load. It also creates an ongoing responsibility to monitor vendor changes and maintain the connection.
Scoping starts by verifying current vendor documentation and the customer's agreement, then testing the required operation in a sandbox or approved environment. An eligibility response, for example, can report benefit information but is not a guarantee of payment.
Keep following the system
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A source-available, fair-code workflow platform with cloud and self-hosted deployment options.