[Solved] What is the primary reason to use a NAT Gateway in a private subnet in AWS? — Ans: To allow instances in the private subnet to access the internet | AWS

AWS - VPC Fundamentals

What is the primary reason to use a NAT Gateway in a private subnet in AWS?

ATo allow internet users to access instances in the private subnet

BTo allow instances in the private subnet to access the internet

CTo provide a firewall for the private subnet

DTo assign public IP addresses to instances in the private subnet

Step-by-Step Solution

Solution:

Step 1: Understand NAT Gateway role
A NAT Gateway allows instances without public IPs to initiate outbound internet traffic.
Step 2: Differentiate inbound vs outbound access
It does not allow inbound internet access to private instances, only outbound.
Final Answer:
To allow instances in the private subnet to access the internet -> Option B
Quick Check:
NAT Gateway purpose = Allow outbound internet from private subnet [OK]

Quick Trick: NAT Gateway enables outbound internet for private subnet only [OK]

Common Mistakes:

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What is the primary reason to use a NAT Gateway in a private subnet in AWS?