11.27Normal Connector vs Bulk API

A useful interview heuristic:

Normal Salesforce operation

Use for:

interactive request
small number of records
latency-sensitive transaction

Bulk API

Use for:

large migration
mass sync
ETL
hundreds of thousands/millions of records

Don't quote a magical number like:

“At 10,001 records you must use Bulk API.”

There isn't one universal threshold.

Say:

“I'd base it on volume, latency requirements, API limits, recovery needs, and whether the workload is transactional or data-movement oriented.”

Much better.