What an API does
An API provides a controlled way for one application to request data or ask another application to perform an action. For example, a CRM can create an invoice, a payment provider can notify an internal system or a dashboard can retrieve current operational data.
Common integration patterns
Integrations may run immediately through webhooks, on a schedule, or when a user performs an action. The best pattern depends on how quickly data must move and how each system handles failures.
Why custom integrations are needed
Built-in connectors are useful, but they often cover only the simplest use case. A custom integration can apply business rules, validate data, handle exceptions and keep an audit trail.
Reliability matters
A good integration includes authentication, logging, retries, monitoring and clear ownership of data. Moving information is easy; making the process dependable is the real engineering work.
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