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Building AWS VPC: A Beginner Friendly Hands On Guide.

In this article, I’ll walk you through one of my recent hands-on AWS projects where I built a Virtual Private Cloud (VPC) from scratch. Whether you’re just starting your cloud journey or looking to reinforce your AWS networking basics, this is a great foundational project.

Cherif Fall

What I Built

This project was all about creating and understanding the core components of AWS networking. Here’s what I did step by step:
  1. Created a VPC
    I started by creating my own Virtual Private Cloud, which is like building my own private space in AWS a secure area where I can launch and manage AWS resources.
  2. Configured Subnets
    I added a public subnet, which allows certain resources (like EC2 instances) to be accessible from the internet.
  3. Set Up an Internet Gateway
    To allow internet access for the public subnet, I created and attached an Internet Gateway to my VPC.
  4. Created Route Tables
    I updated the route tables to make sure the subnet can talk to the internet.
  5. Explored CIDR Blocks
    I learned how CIDR blocks work and how they define the IP range inside the VPC. I used blocks like /16, /24, and learned how they affect the number of IP addresses.

🏀 Explaining VPC with Basketball (Yep, Really!)

To make things easier to understand, I used a basketball analogy:
  • The VPC is like the stadium your private space to run your plays.
  • A Subnet is a section of the court (maybe the half-court) where certain players operate.
  • The Internet Gateway is like the stadium doors you need it open for your team to get in or out (internet access).
  • Route Tables are like the playbook they decide where traffic goes.
This analogy really helped me explain the concepts to non-technical friends, and I’ll keep refining my skills in breaking down technical stuff in simpler ways.

What I Learned

  • The difference between public and private subnets.
  • Why understanding IP addressing is important (CIDR, IPv4).
  • The role of Internet Gateways in enabling outbound traffic.
  • How IAM permissions affect what you can and cannot do (I ran into access issues and learned how to fix them).
  • How availability zones ensure high availability and fault tolerance.
Any opinions in this article are those of the individual author and may not reflect the opinions of AWS.
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