Here are the step-by-step instructions to create an Amazon Elastic Compute Cloud (EC2) instance in AWS:

Step 1: Sign in to the AWS Management Console.

Step 2: Go to the EC2 service by searching for "EC2" in the search bar and selecting it from the results.

Step 3: Click on the "Launch instance" button to start the EC2 instance creation process.

Step 4: Choose an Amazon Machine Image (AMI) for your EC2 instance. This is the operating system and software stack that will be running on your instance.

Step 5: Select an instance type that suits your needs in terms of CPU, memory, and storage capacity.

Step 6: Configure the instance details, including the network settings, subnet, security group, and any additional settings required.

Step 7: Add storage to your instance. You can specify the size and type of the root volume, and add any additional volumes if needed.

Step 8: Configure any additional settings, such as user data, metadata, and tags for your instance.

Step 9: Review your instance configuration and make any necessary changes.

Step 10: Finally, click on the "Launch" button to create your EC2 instance.

Step 11: You will be prompted to select or create a key pair. This key pair is used to securely access your instance via SSH.

Step 12: Once the instance is launched, you can monitor its status in the EC2 dashboard. Once it is running, you can connect to it using SSH or other remote access methods.

Create an EC2 instance using Terraform, follow these step-by-step instructions:

Step 1: Set up the Terraform environment.

Install Terraform on your local machine.

Create a new directory for your Terraform project.

Step 2: Initialize the Terraform project.

Open a terminal or command prompt and navigate to the project directory.

Run the command: terraform init

This will initialize the project and download the necessary provider plugins.

Step 3: Create a Terraform configuration file.

Create a new file with a .tf extension, such as main.tf.

Open the file in a text editor.

Step 4: Define the provider.

In the main.tf file, add the following code to specify the AWS provider:

provider "aws" {
    region = "us-west-2"  # Replace with your desired region
}

Step 5: Define the EC2 instance resource.

Below the provider block, add the following code to define the EC2 instance:

resource "aws_instance" "example" {
  ami           = "ami-xxxxxxxx"  # Replace with your desired AMI ID
  instance_type = "t2.micro"      # Replace with your desired instance type
}

Step 6: Save the configuration file.

Step 7: Create the EC2 instance.

In the terminal, run the command: terraform apply

Terraform will display a plan of the changes it will make.

Type yes to confirm and create the EC2 instance.

Terraform will provision the resources and display the output.

Step 8: Verify the EC2 instance in the AWS Management Console.

Open the AWS Management Console and navigate to the EC2 service.

Confirm that the newly created EC2 instance is listed.

To manage and update your EC2 instance with Terraform, you can modify the configuration file (main.tf) and then re-run the terraform apply command.