Deploying a Highly Available Web App on AWS Using Terraform

Today’s Terraform work took me from a single configurable EC2 web server to a clustered, load-balanced deployment on AWS. The two big ideas I focused on were: using input variables to remove hardcoded values moving from a single server setup to a highly available architecture using an Application Load Balancer (ALB) and an Auto Scaling Group (ASG) From Hardcoded to Configurable A hardcoded Terraform setup works once, but it becomes difficult to reuse. If region, instance type, and port are written directly in main.tf, every change means editing the infrastructure code itself. That’s where input variables help. With Terraform variables, I could define settings like: AWS region EC2 instance type application port environment name server name and then reference them in Terraform with: var.<name> For example: variable "server_port" { description = "The port the server will use for HTTP requests" type = number default = 8080 } variable "instance_type" { description = "EC2 instance type