You are responsible for several EC2 instances deployed from Amazon AMIs that are required to upload information to an S3 bucket. This information must not traverse the public internet. You must also be able to update the instances. Which option is your best solution?

Answer options:

A.Consider using a VPN with an IP addresses specified in the AWS official S3 prefix list
B.Use an S3 endpoint along with a NAT gateway.
C.Use an S3 endpoint along with a NAT Instance.
D.Use an S3 end point associated with the VPC.

Answer – D
Option A is incorrect. VPN is not a solution for this case
Option B and C are incorrect - Because both NAT gateway and NAT instance are used for private instances to communicate with the internet.
Option D is correct. Tha main requirement of the question is that we need to upload information to S3 with out using internet. S3 is a service residing outside the VPC. We also need to update the server with the latest patches.
NAT Gateway is not required since AWS hosts YUM repository on S3can be accessed using S3 VPC GATEWAY endpoint, and doesn`t need to go across the internet to get the server updates.
We need to create an S3 end point for the VPC and select the route table.
Subnets associated with selected route tables will be able to access this endpoint. When we use an S3 end point to connect we will be using Amazon`s internal network to communicate with the S3 rather than internet.