100 Days of AWS Day 21

 Your Own Private Cloud with Amazon VPC 100 Days of AWS Day 21.

Welcome to the 21 nd day and the beginning of our week of "Core Networking"! A secure, private network is required, in which to place before you can launch practically any resource (such as an EC2 instance). In AWS, such network is your Amazon Virtual Private Cloud (VPC).

---

The Question

A company wants to create a private, isolated network in the AWS cloud to launch its resources, giving it full control over IP addresses, subnets, and route tables, just like in a traditional data center.

Which AWS service is designed for this purpose?

---

The Correct Answer

The right selection is (B) Amazon VPC (Virtual Private Cloud).

Reason It Is Right: Your own Slice of the AWS Cloud.

VPC refers to your personal, logically separated and isolated part of the AWS worldwide cloud. It is a virtual network, which is quite similar to a conventional network which you would run in your own data center.

When you make a VPC, you are given the entire control of its environment:

• IP Address Range: Your own private range of IP addresses (in CIDR notation).
• Subnets: You can divide that range of IP into smaller units known as subnets.
• Route Tables: You decide the route of the traffic between your subnets and to the internet.
• Gateways: You control the access to the outside internet (Internet Gateway) or your business network (Virtual Private Gateway).
• It serves as a base unit of virtually all of your AWS resources.

An Analogy: Fenced-Off Land 🏡

The AWS Cloud resembles a huge, open land mass.

VPC is similar to purchasing a piece of such land and encircling it with a high fence. You have your own fence and it is your property. The choice is yours on how to subdivide it (subnets), the location to construct roads (route tables) and the location where the main gate goes (Internet Gateway).

The Analysis of the Incorrect Options.

A) AWS Direct connect: It is a service which establishes a dedicated and exclusive physical link between your data center on-premise and your AWS environment. It links to a VPC but it does not form the virtual network.

(C) AWS Security Group: A Security Group is a firewall that is virtual and configured to block incoming and outgoing traffic to your EC2 instances. It is a vital security aspect, which is installed within a VPC yet is not the network.

(D) Amazon Route 53: It is a web service of Domain Name System (DNS) which is scalable by AWS. It resolves human friendly domain names (such as the name of Google, that is, google.com) into IP addresses. It is a networking service which is utilized in DNS, not in the formation of a personal virtual network.

Keywords

Amazon VPC (Virtual Private Cloud)
AWS Networking
Virtual Network
Cloud Networking
Network Isolation
Subnets
Route Tables
Internet Gateway
CIDR Block
VPC Security
AWS Security Group
"what is a vpc in aws"
"how to create a vpc in aws"
"aws vpc for beginners"
"benefits of using a vpc"
"securing aws resources with a vpc"