EC2 Fundamentals

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 Amazon: Elastic Compute Cloud (EC2) Basics

Amazon EC2 (Elastic Compute Cloud) is a service within AWS (Amazon Web Services) that lets you rent virtual computers (servers) in the cloud to run applications. Think of it as hiring a computer remotely that you can control, customize, and use just like a computer at home or work.



Here’s a breakdown of EC2 in simple terms:

What EC2 Is:

EC2 provides scalable virtual servers (instances) in the cloud. You can choose different types of instances based on your needs, like more CPU power, memory, or storage.

Why Use EC2:

  • You only pay for what you use.
  • You can scale up or down quickly—
         add more instances when you need more computing  power and shut them down when you don’t.
  • No need to manage physical servers or deal with maintenance.

    • How It Works:

  • Launch:
            Start a new server (instance) by choosing an Amazon Machine Image (AMI), which is like a template of an operating system and basic software.

  • Instance Types:
            Choose the size and power of your instance. EC2 offers various instance types, like  general-purpose, compute-optimized, or memory-optimized, to match different needs.

  • Security:
           Set up a Security Group, which acts as a firewall to control who can access your instance.

  • Elastic IP:
            An optional static IP that lets you keep a consistent address even if you stop and restart your instance.

    • Costs:

    You’re charged for the time your instance runs. AWS also offers different pricing models: on-demand (pay as you go), reserved (long-term commitments for cheaper rates), and spot instances (cheaper rates with potential interruptions).

    Elasticity:

    EC2 is "elastic" because you can launch or terminate instances quickly. AWS also provides Auto Scaling, which can automatically add or remove instances based on demand.

    Example: 

    If you have a website, you could use EC2 to host it. During high traffic times, you could launch additional instances to handle the load.

    Location: Kathmandu, Nepal

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