A new client may use your company to replicate all their existing Data Center applications and infrastructure to AWS. This is going to be a huge contract for your company, and you have been handed the entire contract and need to provide an initial scope to this possible new client. One of the things you notice concerning the existing infrastructure is that it has a small amount of legacy applications that you are almost certain will not work on AWS. Which of the following would be the best strategy to still preserve the connectivity to these legacy applications? Choose the correct answer from the options below

Answer options:

A.Create two VPCs. One containing all the legacy applications and the other containing all the other applications. Make a connection between them with VPC peering.
B.Move the legacy applications onto AWS first, before you build any infrastructure. There is sure to be an AWS Machine Image that can run this legacy application.
C.Create a hybrid cloud by configuring a VPN tunnel to the on-premises location of the Data Center
D.Convince the client to look for another solution by de-commissioning these applications and seeking out new ones that will run on AWS.

Answer – C
The best option is to have a dual mode wherein you have the legacy apps running on-premise and start replicating the apps which have compatibility in the cloud. Have a VPN connection from the on-premise to the cloud for ensuring communication can happen from each environment to the other.
For the full fundamentals on AWS networking options, please visit the URL:
https://aws.amazon.com/blogs/apn/amazon-vpc-for-on-premises-network-engineers-part-one/