A company wants to migrate data from an Amazon RDS for PostgreSQL DB instance in the eu- east-1 Region of an AWS account named Account_A. The company will migrate the data to an Amazon Redshift…

Question

Options

• ASet up an AWS DMS replication instance in Account_B in eu-west-1.
• BSet up an AWS DMS replication instance in Account_B in eu-east-1.
• CSet up an AWS DMS replication instance in a new AWS account in eu-west-1.
• DSet up an AWS DMS replication instance in Account_A in eu-east-1.

• A
  10% (3)
• B
  83% (24)
• C
  3% (1)
• D
  3% (1)

Explanation

AWS DMS replication instances replicate data by reading from the source and writing to the target. When the replication instance is placed in Account_B in eu-east-1 (the same region as the source RDS instance), it can efficiently read from the source with minimal cross-region egress costs, while still being in the target account (Account_B) where it has the necessary IAM permissions to write to the Redshift cluster in eu-west-1. Placing it in Account_A (D) would require complex cross-account permissions to write to Account_B's Redshift. Placing it in a new account (C) adds unnecessary account management overhead. Option A (Account_B eu-west-1) would cause all source data to travel cross-region twice, increasing latency and cost.

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