Compute Services: EC2 and Lambda

Compute services in AWS are designed to provide scalable computing power. Two commonly used compute services in AWS are EC2 (Elastic Compute Cloud) and Lambda. Let's take a closer look at these services:

EC2 (Elastic Compute Cloud)

EC2 is a virtual computing environment offered by AWS. It allows users to rent virtual servers, known as instances, on-demand. EC2 instances provide a wide range of options for compute capabilities, memory, storage, and networking. You can choose the instance size based on your application requirements and pay only for the resources you consume.

To create an EC2 instance using the AWS Management Console, follow these steps:

1. Sign in to the AWS Management Console.
2. Navigate to the EC2 Dashboard.
3. Click on 'Launch Instance' to start the instance creation wizard.
4. Select an Amazon Machine Image (AMI) that suits your application needs.
5. Choose the instance type, storage options, and network settings.
6. Configure security groups and add tags to the instance.
7. Review the instance details and launch the instance.

Once the instance is launched, you can connect to it using SSH or other remote access methods and start using it for your application.

Lambda

Lambda is a serverless computing service provided by AWS. With Lambda, you can run your code without provisioning or managing servers. It allows you to focus on writing code and building applications without worrying about the underlying infrastructure.

Lambda functions are event-driven and automatically scale in response to incoming requests. You only pay for the compute time consumed by your function and there are no charges when your function is not running.

To create a Lambda function using the AWS Management Console, follow these steps:

1. Sign in to the AWS Management Console.
2. Navigate to the Lambda Dashboard.
3. Click on 'Create function' to start the function creation wizard.
4. Choose a function blueprint or create a custom function.
5. Configure the function triggers and provide the function code.
6. Set the desired runtime and other function settings.
7. Configure permissions and create an execution role for the function.
8. Review the function details and create the function.

Once the function is created, you can test and invoke it using various supported triggers.

By using compute services like EC2 and Lambda, you can leverage AWS's scalable and flexible infrastructure to run your applications efficiently and cost-effectively.

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class Main {

  public static void main(String[] args) {

    // Replace with your Java logic here

    int x = 5;

    int y = 10;

    int sum = x + y;

    System.out.println("The sum of " + x + " and " + y + " is " + sum);

  }

}