IntegrationBeginnerrestintegrationbasics
What is a REST API integration with Salesforce?
Real World Scenario
An external ERP must create Accounts in Salesforce nightly. You explain REST at a high level.
Expected Answer
• REST uses HTTP methods GET, POST, PATCH, DELETE on resource URLs with JSON payloads
• Salesforce REST API exposes sObjects, query, composite, and custom Apex REST endpoints
• Clients authenticate with OAuth tokens, not username/password in production
• API version in URL (e.g., v62.0) should be pinned and upgraded deliberately
• Design for idempotency and error handling on retries
Follow-Up Questions & Answers
Click to expand — each follow-up includes a direct, interview-ready answer
REST suits interactive single or small batch operations. Bulk API handles large data loads asynchronously with job polling.
Architect Perspective
REST interview opener: HTTP + JSON + OAuth + versioning. Hit those four every time.