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VPC peering connection 2024

VPC peering in AWS is a networking connection between two VPCs, allowing them to communicate with each other seamlessly. It creates a secure and direct connection, enabling resources within different VPCs to interact as if they were part of the same network. This feature simplifies complex network architectures, promotes cost-effective data transfer, and facilitates resource sharing between VPCs. VPC peering is essential for organizations with distributed or multi-region cloud architectures, offering a straightforward way to establish connectivity while maintaining security and efficiency. Remember that you can connect VPC networks located in different regions and in different AWS accounts.

Advantages and disadvantages of a peering connection:

Below you will find, in my opinion, 2 biggest advantages and disadvantages of a peering connection.

  • The biggest Advantages of VPC Peering in AWS:
  1. High Quality & Cost-Efficiency - Communication between peered VPCs takes place over the AWS backbone network, resulting in cost-effective and low-latency data transfer. This is faster and more economical compared to using traditional methods or the public internet for inter-VPC communication.

  2. Simplified Network Management - VPC peering simplifies network management by eliminating the need for complex configurations such as VPN connections or dedicated physical connections. It offers a straightforward approach to establishing and managing connectivity between VPCs, reducing operational overhead.

  • The biggest Disadvantages of VPC Peering in AWS:
  1. Non-Transitive Peering - VPC peering is non-transitive, meaning that if VPC A is peered with VPC B and VPC B is peered with VPC C, VPCs A and C do not have direct connectivity. Separate peering connections are required for each pair of VPCs that need to communicate.

  2. IP Address Overlapping - VPCs with overlapping IP addresses cannot be peered. Careful planning of IP address ranges is essential to avoid conflicts and ensure a successful VPC peering connection.

Understanding these advantages and disadvantages is essential for organizations to effectively leverage VPC peering in AWS while addressing potential challenges in their network architectures.

If you want to know more, please watch my video
You will learn not only theory but also practice. You will learn how to practically connect VPC networks using a peering connection.

Peering connection between Transit Gateways? Why not :) You will learn more about this in the part 2/2.

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