What is the difference between Multi-AZ deployment and single-AZ in RDS?

Question

Narendran Srinivasan · Accepted Answer

Multi-AZ deployment in RDS provides high availability and automatic failover by replicating data to a standby instance in another Availability Zone. Single-AZ deployment runs the database in one zone without automatic failover, offering lower cost but

Narendran Srinivasan · Answer

Multi-AZ deployment in RDS provides high availability by synchronously replicating data to a standby instance in another Availability Zone with automatic failover. Single-AZ runs the database in one zone without failover, offering lower cost but no automatic redundancy.

Narendran Srinivasan · Answer

In short: Single-AZ = cost-effective but less resilient, Multi-AZ = higher availability and durability with automatic failover.

What is the difference between Multi-AZ deployment and single-AZ in RDS?

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