💬 In plain words: Integration design boils down to three core questions: Who initiates the conversation? How quickly is the answer needed (real-time vs. batch)? How reliable must the delivery be? Your answers will point you directly to one of Salesforce's official integration patterns, such as Request-Reply, Fire-and-Forget, or Batch Sync. ⚡ 1-Minute Summary Four key questions dictate your pattern: who starts it, how fast must it be, how much data is moving, and who owns the source of truth. A synchronous callout cannot run in the same transaction after you perform DML (database updates). You must use an asynchronous method like a Queueable or publish an event. Push architectures always beat polling. Subscribing to a single event is vastly more efficient than making 10,000 API calls asking, "Is there anything new?" MODULE root: 'Talking to the outside & scaling' ├─ Pattern catalog (name i...
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