Payment orchestration
Use a server-side boundary for provider credentials, request signing and provider-specific behavior.
Status model
Normalize initiated, pending, successful, failed, reversed and review states so the client cabinet and operations share one interpretation.
Callbacks and idempotency
Treat provider callbacks as untrusted external events, verify authenticity and make processing idempotent.
Reconciliation
Compare internal records with provider records and route mismatches to an exception workflow.
Withdrawal controls
Apply the broker’s authorized review and security procedures before high-impact payment actions.
Security
Protect secrets, minimize sensitive data, restrict administrative permissions and log material changes.
Observability
Track provider availability, callback failures, processing latency and unresolved reconciliation items.