Integration is an operating capability, not a cable
Reliable integrations need ownership, monitoring, reconciliation and recovery - not only endpoints.
An API connection can move data, but it cannot decide who owns a failed transaction or whether a late update is safe to replay.
Make health visible
Operational integration should expose success rates, queues, latency and reconciliation status in language the responsible team can use.
Plan recovery
Retries, idempotency and human review paths need to be designed before failures occur.