AWS VPC Architecture

Title: "AWS VPC Architecture with Public-Private Subnets for High Availability and Security"

Designed and implemented a secure, highly available AWS Virtual Private Cloud (VPC) architecture optimized for production environments. Key features include:

• Multi-Availability Zone deployment for enhanced fault tolerance

• Public and private subnets for improved security isolation

• NAT gateways to enable outbound internet access for private resources

• Application Load Balancer for efficient traffic distribution

• Auto Scaling group to dynamically adjust compute capacity.

• Security groups to control inbound and outbound traffic.

This architecture provides a robust foundation for deploying scalable and secure applications in AWS, balancing accessibility, performance, and protection of sensitive resources.

Here are the steps to build this AWS VPC architecture:

1. Create a VPC

   • Define the IP address range for the VPC

2. Create subnets

   • Set up public and private subnets in multiple Availability Zones

3. Configure Internet Gateway

   • Create and attach an Internet Gateway to the VPC

4. Set up NAT Gateways

   • Create NAT Gateways in the public subnets

5. Configure route tables

   • Create separate route tables for public and private subnets

   • Associate subnets with appropriate route tables

6. Create security groups

   • Define security groups for different tiers (e.g., web, application, database)

7. Launch EC2 instances

   • Deploy servers in the private subnets

8. Set up Auto Scaling group

   • Create launch template or configuration

   • Configure Auto Scaling group using the template

9. Configure Application Load Balancer

   • Create target groups

   • Set up ALB in public subnets

10. Implement security measures

    • Configure Network ACLs if needed

    • Ensure proper IAM roles and permissions