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Van Hoang Kha
Van Hoang Kha

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Networking on AWS - Part 3

In the previous parts, we discussed the basics of networking on AWS and how to set up and configure a VPC on AWS. In this part, we will take a closer look at advanced networking concepts on AWS.

VPC Peering

VPC peering allows you to connect two VPCs, allowing instances in one VPC to communicate with instances in the other VPC. This can be useful if you have multiple VPCs that need to communicate with each other but are not part of the same network.

VPC peering is secure, and the traffic between the two VPCs is encrypted. You can also use VPC peering to connect VPCs across different regions.

Transit Gateway

Transit Gateway is a service that allows you to connect multiple VPCs and on-premises networks. It acts as a hub that connects all your networks, allowing you to manage traffic between them centrally.

Transit Gateway is highly available, and you can scale it to support up to 5,000 VPCs. You can also use it to connect VPCs across different regions.

VPC Endpoints

VPC endpoints allow you to connect to AWS services without the need for an internet gateway or NAT gateway. This improves security by reducing the number of entry points to your VPC.

VPC endpoints are available for many AWS services, including S3, DynamoDB, and Lambda. When you create a VPC endpoint, you can specify which service it connects to and which VPCs can access it.

Elastic Load Balancing

Elastic Load Balancing is a service that distributes incoming traffic across multiple instances in your VPC. This improves performance and availability by balancing the traffic load across multiple instances.

Elastic Load Balancing is available in three flavors: Application Load Balancer, Network Load Balancer, and Classic Load Balancer. Each load balancer type is optimized for specific use cases.


In conclusion, AWS provides advanced networking capabilities that allow you to create highly available and secure architectures for your applications. VPC peering, Transit Gateway, VPC endpoints, and Elastic Load Balancing are just a few of the many features available on AWS.

By leveraging these features, you can create complex and highly available network architectures that meet the needs of your applications. It is essential to have a solid understanding of the basics of networking on AWS and to keep up-to-date with the latest features and best practices to ensure that your deployments are secure, reliable, and performant.

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