An API defines a way for software to interact with another component or service. It can allow an application to request information, create a record or perform another supported operation.
For a business, the important point is that an integration depends on the operations actually available. Saying a service “has an API” does not establish that every desired workflow is possible.
What is a request and response?
One component sends a request in the required form. The receiving service evaluates it and returns an appropriate response.
The response may contain information, confirmation or an error. A reliable integration needs to handle each relevant case rather than assume every request succeeds.
What are endpoints?
In a web API, endpoints represent supported destinations for particular operations. Their methods, inputs and permissions are described by the service.
Check current documentation. A read operation and a record-changing operation can have different requirements and consequences.
How does authentication fit in?
Authentication and authorisation determine who the request represents and which operations are allowed. Access should match the workflow's actual needs.
Do not expose secret credentials in public website code. The integration architecture should keep sensitive access material within an appropriate boundary.
What are rate limits?
A service can restrict request volume or frequency. The integration should handle those conditions without losing important work or repeatedly creating duplicates.
Plan retry behaviour and operational visibility. A temporary failure should have a clear recovery path.
Why does data mapping matter?
Systems may represent names, statuses, dates and identifiers differently. Information needs an explicit mapping rather than a superficial field-name match.
Decide which system owns each value and how updates or conflicts are resolved. That prevents two connected systems from continuously overwriting each other.
What should a project brief include?
Define the trigger, required operations, data, permissions and expected outcome. Include error cases and responsibility for monitoring.
A small verified workflow is a better starting point than a broad promise to connect everything. Test the actual sequence before relying on it operationally.
Further reading
For reference, see the supporting documentation. Explore related explanations of Webhook, Customer relationship management, AI agent.
A practical example
Illustrative example: a website integration creates an enquiry record through a CRM API. It maps the required fields, validates the response and records failures for review. The team checks duplicate handling before enabling retries.
Why it matters
APIs enable useful connections between systems. Their value depends on supported operations, reliable data handling and an appropriate operating model.
