To launch an EC2 (Elastic Compute Cloud) instance from an Amazon Machine Image (AMI), you can follow these steps using the AWS Management Console. Make sure you have an AWS account and the necessary permissions to create EC2 instances.

Sign in to the AWS Management Console:

Go to AWS Console and sign in with your AWS credentials.

Navigate to EC2:

Click on "Services" in the top left corner and select "EC2" under the "Compute" section.

Launch Instance:

In the EC2 Dashboard, click on the "Instances" link in the left-hand navigation pane, and then click the "Launch Instances" button.

Choose an AMI:

In the "Step 1: Choose an Amazon Machine Image (AMI)" section, you can select an AMI to launch your instance. You can choose from the "My AMIs," "AWS Marketplace," or "Community AMIs" tabs, depending on where your desired AMI is located.
Choose an Instance Type:

In the "Step 2: Choose an Instance Type" section, you can select the instance type that best suits your needs. Different instance types offer various levels of CPU, memory, and other resources.
Configure Instance:

In the "Step 3: Configure Instance Details" section, you can specify various configuration options for your instance, such as the number of instances to launch, VPC settings, subnet, IAM role, and more. You can leave most settings at their default values if you're unsure.
Add Storage:

In the "Step 4: Add Storage" section, you can configure the storage options for your instance. By default, an EBS (Elastic Block Store) volume is attached. You can modify the size and type of storage as needed.
Add Tags (Optional):

In the "Step 5: Add Tags" section, you can add metadata in the form of key-value pairs to your instance for easy identification. This step is optional but can be helpful for organization.
Configure Security Group:

In the "Step 6: Configure Security Group" section, you can specify the security group rules for your instance. Security groups act as firewalls, controlling inbound and outbound traffic. Make sure to configure these settings to allow necessary network access.
Review and Launch:

In the "Step 7: Review Instance Launch" section, review all the configuration settings to ensure they are correct. You can also click the "Edit" button for any section to make changes.
Launch the Instance:

After reviewing, click the "Launch" button. A dialog box will appear asking you to select an existing key pair or create a new one. Key pairs are used for SSH access to the instance. Choose an existing key pair or create a new one, then click "Launch Instances."
View Instances:

You'll be redirected to the Instances page, where you can monitor the launch progress of your instance. Once it's running, you'll see its status as "running," and you can access it using the specified key pair.
That's it! You have successfully launched an EC2 instance from an AMI. You can now connect to the instance using SSH (for Linux instances) or RDP (for Windows instances) and start using it for your intended purposes.

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