IntegrationIntermediateexternal-servicesopenapiflow
Implement Salesforce External Services for OpenAPI integrations
Real World Scenario
Admins want Flow to call REST API without Apex using imported OpenAPI spec.
Expected Answer
• Import OpenAPI 3 spec creating invocable External Service actions
• Named Credential binding for auth
• Flow handles HTTP errors with fault paths
• Regenerate actions when spec updates
• Limitations on complex nested schemas
• Supplement with Apex when External Services insufficient
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
Main difference: use case and scale. Import OpenAPI 3 spec creating invocable External Service actions. Named Credential binding for auth. Pick based on your integration pattern and team capability. External Services democratizes integration—govern with review before production Flows call external APIs. Balance speed of delivery with maintainability.
Architect Perspective
External Services democratizes integration—govern with review before production Flows call external APIs.