在同一个区域创建的两个 AWS 账户是否共享同一个 VPC？

Question

Do two AWS accounts created in the same region share the same VPC, Because the VPC is in the level of region? Or each account in the same region has its own VPC?

Example: What about if user_A with account_A create an EC2 instance in region Ohio and another user_B with account_B create another EC2 instance in the same region Ohio, Do these two different instances are in the same VPC? Because as I know (if I am not wrong) a region is attached with a single VPC..?

Answer 1

A VPC is a logically isolated.network. And a single aws account can have many VPC's. This then will naturally mean two VPC's in two different accounts are also separate. Network traffic between them will need to be configured unless you opt to setup sharing.

Shared VPC's can be configured if you wished at a Organization level - https://aws.amazon.com/blogs.networking-and-content-delivery/vpc-sharing-a-new-approach-to-multiple-accounts-and-vpc-management/

Answer 2

Just a suggestion...

It could not be in the same VPC, but you can use VPC Peering to interact these resources privately. You can setup easily VPC Peering between accounts. Also, You cannot use same CIDR block between these VPC's.

Answer 3

No. VPC is exclusive and managed per customer account.

Additionally:

• A VPC exist and tied to one region
• You can create su.net(public and/or private) under VPC.
• Each su.net must reside entirely within one Availability Zone and cannot span zones.
• A region contains at least 2 availability zone (data center).