EC2 (Elastic Compute Cloud) is AWS's service for renting virtual servers in the cloud.

In simple terms: You get a Linux or Windows server running on AWS infrastructure that you can access over the internet.

Common Use Cases:

EC2 provides scalable virtual servers in the cloud with pay-as-you-go pricing.

EC2 Key Features

Feature Description
Elastic Scale up or down anytime based on demand
Pay-as-you-go Pay only for the time the instance is running
Secure Key-based login, firewall via Security Groups
Scalable Go from 1 to thousands of servers as needed

EC2 Launch Flow

1. Login to AWS Console
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2. Navigate to EC2 → Launch Instance
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3. Select AMI (e.g., Ubuntu 22.04)
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4. Select Instance Type (e.g., t2.micro)
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5. Configure Security Group (open required ports)
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6. Create or select Key Pair
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7. Launch Instance
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8. Connect via SSH using .pem key

Core EC2 Concepts

1. AMI (Amazon Machine Image)

An AMI is a pre-built template that contains: