Automating AWS Infrastructure with CloudFormation: A Step-by-Step Guide

In today's cloud-driven world, automating infrastructure deployment is crucial for efficiency and scalability. AWS CloudFormation is a powerful tool that allows you to define and provision your AWS infrastructure as code. By using AWS CloudFormation, you can automate the deployment of complex infrastructure, ensuring consistency and reducing manual errors.

In this article, I'll walk you through a CloudFormation project that sets up a robust network architecture following the best practices. This project demonstrates how to set up a scalable and highly available web application architecture on AWS. This includes a VPC, subnets, NAT gateways, EC2 instances within an Auto Scaling Group, an Application Load Balancer and a Route 53 record.

Project Overview

This CloudFormation template deploys the following resources:

• A Virtual Private Cloud (VPC) with two Availability Zones (AZs) for high availability and fault tolerance.
• Public and private subnets in each AZ.
• An Internet Gateway for internet access in public subnets.
• NAT Gateway with assigned Elastic IP in each AZ for outbound internet access from private subnets.
• Public and private route tables with the routing rules for the traffic.
• EC2 instances in private subnets with a simple web page displaying the instance's AZ.
• Auto Scaling Group to maintain the desired number of EC2 instances depending on the load.
• An Application Load Balancer (ALB) to distribute the traffic between the EC2 instances.
• Security groups as firewall to control the network access to the EC2 instances and the ALB.
• Route 53 record with a simple routing from the domain name to the the ALB.

All the resources are tagged with the project name to easily identify them in the AWS Management Console and for billing purposes.

A comprehensive guide on how to run this project with a detailed explanation of every part of the CloudFormation template can be found on my GitHub repository. Feel free to reach out if you have any questions or need further assistance with your AWS projects!

I would like to mention some amazing people who inspired me and whom I learn from or collaborate with: Amadou Merico ?, AET Cheikh Amala THIAM Neal K. Davis Prasad Rao Teegan A. Bartos Amir Malaeb Ali Sohail Kumail Rizvi

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