# Create key pair
aws ec2 create-key-pair \
  --key-name MyKeyPair \
  --query 'KeyMaterial' \
  --output text > MyKeyPair.pem

# Launch EC2 instance (t3.micro free tier)
aws ec2 run-instances \
  --image-id ami-0abcdef1234567890 \
  --count 1 \
  --instance-type t3.micro \
  --key-name MyKeyPair \
  --security-group-ids sg-12345678 \
  --subnet-id subnet-abcdef12

# main.tf
provider "aws" {
  region = "us-east-1"
}

resource "aws_s3_bucket" "app" {
  bucket = "my-app-bucket-2025"
  tags   = { Env = "production" }
}

resource "aws_s3_bucket_versioning" "v" {
  bucket = aws_s3_bucket.app.id
  versioning_configuration {
    status = "Enabled"
  }
}
# terraform init && terraform apply

# deployment.yaml
apiVersion: apps/v1
kind: Deployment
metadata:
  name: my-app
spec:
  replicas: 3
  selector:
    matchLabels: { app: my-app }
  template:
    spec:
      containers:
      - name: app
        image: myrepo/my-app:v2.1
        resources:
          requests: { cpu: "100m", memory: "128Mi" }
          limits:   { cpu: "500m", memory: "512Mi" }
        readinessProbe:
          httpGet: { path: /health, port: 8080 }

import boto3
from botocore.exceptions import ClientError

s3 = boto3.client('s3',
  region_name='us-east-1')

def upload_file(file_name, bucket, key=None):
  key = key or file_name
  try:
    s3.upload_file(file_name, bucket, key,
      ExtraArgs={'ServerSideEncryption': 'AES256'})
    print(f"✓ Uploaded → s3://{bucket}/{key}")
    return True
  except ClientError as e:
    print(f"✗ Error: {e}"); return False