Connections without hidden magic.
An integration is a contract between systems. Format, authentication, limits, retries and failure need explicit rules.
Data contract
Input and output have a schema, constraints and version. An unknown field does not automatically become trusted data.
Idempotency and retry
Retrying the same request must not create a duplicate. A changed payload receives a new request identity.
Dependency boundaries
Timeouts, rate limits, 4xx and 5xx responses receive different handling, records and user messages.
Observe the flow
Logs retain enough context for diagnosis without storing passwords, tokens or unnecessary personal information.