Amazon EC2 Instances

Amazon Elastic Compute Cloud (Amazon EC2) offers on-demand, scalable computing resources (virtual servers) within the Amazon Web Services (AWS) Cloud. Amazon EC2 reduces hardware expenditures, accelerates application development and deployment. It enables the deployment of an arbitrary number of virtual servers, configuration of security and networking, and management of storage resources. Capacity can be scaled up to accommodate compute-intensive operations, or surges in website traffic. When utilization diminishes, you may subsequently scale down.  

 

The instance type specified during the launch of an EC2 instance determines the hardware resources allocated to that instance. Each instance type provides balance of computational power, memory, networking capabilities, and storage resources.

Source: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/concepts.html [accessed on 16.04.2025]

Amazon EC2 provides instance choice to match your needs. General purpose, compute optimized, memory optimized, storage optimized, and accelerated computing instance types are available that provide the optimal compute, memory, storage, and networking balance for your workloads. Intel, AMD, NVIDIA and AWS processors power these instance types and provide additional performance and cost optimizations. Local storage and enhanced networking options help to optimize performance for workloads that are disk or network I/O bound. To find the right instance for your workload, visit the EC2 instance types page.

Amazon EC2 resources are specific to the AWS Region or zone in which they reside. When you create an Amazon EC2 resource, you select the Region for the resource.

An Amazon EC2 instance transitions through different states from the moment you launch it through to its termination.

Source: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/ec2-instance-lifecycle.html[accessed on 16.04.2025]

The usage billing is based on the state of instance. The user is billed if the instance is running and ready for use.

 

If AWS detects that an instance is unavailable due to an underlying hardware or software issue, there are two mechanisms that can automatically restore instance availability—simplified automatic recovery and Amazon CloudWatch action based recovery. Restoring instance availability is also known as instance recovery.

During the instance recovery process, AWS will attempt to move your instance from the host with the underlying hardware or software issue to a different host. If successful, the instance recovery process will appear to the instance as an unplanned reboot. You can verify if instance recovery occurred.

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