Networking is the most essential part of running a franchise or for the development of products and services through digital means. Networking in a cloud intensive environment is a little different than the basic or physical networking. Of course, a lot of things such as availability, bandwidth requirements, and security of the networking channels used in the cloud architecture needs to be studied and understood well before you can begin to understand the prospect of what networking architecture of AWS cloud is.
The following are some of the most commonly used components within the AWS cloud's networking architecture. Without understanding the key meaning of these components an overall perception of cloud’s networking architecture can’t be made. So, without further ado let’s get right into it;
VPC (virtual private cloud)
A VPC is a dedicated cloud or region appointed to you by the AW in order to hold or place all your services within it. It is the logical data center within the AWS cloud systems. VPC consists of gateways, route tables, network access control lists, subnets, and security groups. The main reason why there is a need for VPC is because of the security reasons, using the VPC systems you will be able to restrict any specific type of traffic, dedicated IPs and users as well. Also, a variety of services can be made hidden that you don't want the public to find or bother with.
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Subnet
While working with the VPC systems you are required to specify a range of different IPv4 addresses for the VPC in the form of Classless inter-domain routing. We can then divide this IP block into several parts and assign different availability zones to them right away with the help of the subnets. These can be private as well as private subnets depending on the very type required. Various pods and services deployed within the public subnets are automatically assigned public IP addresses.
Internet gateway
The Internet gateway is something that makes the communication between various components of VPC and the internet possible. This can work both ways. The external parties can access the VPC via the help of the internet and similarly, the components within the VPC can also access the internet. An internet gateway supports both the IPv4 and IPv6 traffic. There are no availability risks or bandwidth constraints on your network traffic.
NAT Gateway
It loosely translates into network address translation. When a local IP address needs to access some site or utility on the internet then it needs to be replaced with a global IP address, this is done by the NAT gateway. But there are some limitations to its use and effect as compared with the internet gateway. Although the elements or the components within the VPC can always access the NAT gateway. External parties however that reside out of the VPC won’t be able to access the VPC through the NAT gateway.
This is all about the introduction to the networking architecture of the AWS systems. The AWS certification training is required if you want to work as an AWS professional.