A Company currently uses the NetFlow software to monitor and get the details of the traffic that flows between systems in their On-premises network. They want to have the same ability when they start moving their servers to AWS. Which of the following service can help them meet this requirement?

Answer options:

A.AWS Cloudwatch logs
B.AWS VPC Flow Logs
C.AWS Cloudwatch metrics
D.AWS Config

Answer – B
NetFlow is a network protocol developed by Cisco for collecting IP traffic information and monitoring network traffic.
The AWS Documentation mentions the following.
VPC Flow Logs are similar to scheduled NetFlow/sFlow/IPFIX reports. Flow logs collect the source and destination IP, source and destination ports, protocol, packet counts, and ALLOW or DENY action for a particular VPC, subnet, or ENI. They are currently collected and sent as a report every 10 minutes.
Options A, C and D are all incorrect because the right software which matches the Netflow software is VPC Flow Logs.
For more information on VPC Flow logs, please visit the following URL
https://docs.aws.amazon.com/AmazonVPC/latest/UserGuide/flow-logs.html