AWS FAQ: What is Auto Scaling?

AWS Auto Scaling helps automatically adjust capacity to maintain performance and control costs for EC2, ECS, DynamoDB, and more.

🗺️ Step-by-Step Instructions:

1. Create an Auto Scaling Group.
2. Attach EC2 instances and define scaling policies.
3. Configure CloudWatch alarms to trigger scaling.

📥 Example Input:

MinSize: 2
MaxSize: 10
DesiredCapacity: 4

🏆 Expected Output:

EC2 fleet scales based on CPU usage or custom metrics.

✅ Auto Scaling CLI Example:

aws autoscaling create-auto-scaling-group --auto-scaling-group-name my-asg --launch-configuration-name my-lc --min-size 1 --max-size 5 --desired-capacity 2

📘 Detailed Explanation:

• Elasticity: Automatically match demand and supply.
• High Availability: Ensure redundancy during failures.
• Cost Efficiency: Avoid overprovisioning.

🛠️ Use Cases:

• Web applications with variable traffic.
• Batch processing workloads.
• Autoscaling backend services.