We have a simple setup that consists of...

1 EC Instance for HTTP/PHP requests
1 RDS Instance for our Database requests

Currently our two servers do not use VPC to communicate.

I was wondering if there would be performance advantages to setting the two servers up on a VPC. Would a VPC lower the response time when the servers communicate?


No, VPC would not be any faster because it is almost definitely implemented as an overlay network (i.e. tunnelled packets which are transported on the same network as non-VPC connectivity is). In fact, VPC would be slightly slower because of the additional cost of encapsulation, decapsulation, and routing.

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  • Then is there ever a point to putting both inside a VPC? – wrongusername Aug 10 '14 at 4:02

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