A PostgreSQL team routes reports to its synchronous HA standby and claims a cross-region replica is the same mechanism. What is the correct distinction?

Choose the single best answer.

A.Read replicas add synchronous primary write capacity automatically
B.HA standby serves supported synchronous availability; read replicas serve asynchronous eligible read scale and regional promotion needs its own plan
C.Both are always readable primary endpoints with identical automatic failover
D.The local HA standby guarantees regional recovery because it is warm

Show the answer and explanation

✓ Correct answer

HA standby serves supported synchronous availability; read replicas serve asynchronous eligible read scale and regional promotion needs its own plan

The HA standby is not the ordinary reporting replica, while asynchronous replicas have their own consistency/promotion behavior. Neither changes write capacity as described, and local HA does not automatically span a region outage. Source guide: PDF page 41.

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