Explain the service provided by the amazon EC2 service from user perspective .

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Amazon Elastic Compute Cloud (Amazon EC2) 

Amazon Elastic Compute Cloud (Amazon EC2) is an Amazon Web Service (AWS) you can use to access servers, software, and storage resources across the Internet in a self-service manner. It provides scalable, pay-as-you-go compute capacity. It is said to be elastic since it is scalable in both directions along the client as well as the service provider. 


Amazon EC2 provides the following features:

  • Virtual computing environments, known as instances
  • Preconfigured templates for your instances, known as Amazon Machine Images (AMIs), that package the bits you need for your server (including the operating system and additional software)
  • Various configurations of CPU, memory, storage, and networking capacity for your instances, known as instance types 
  • Secure login information for your instances using key pairs (AWS stores the public key, and you store the private key in a secure place)
  • Storage volumes for temporary data that are deleted when you stop or terminate your instance are known as instance store volume. Persistence storage volumes for your data using Amazon Elastic Block Store (Amazon EBS), known as Amazon EBS volumes
  • Multiple physical locations for your resources, such as instances and Amazon EBS volumes, known as regions and Availability Zones
  • A firewall that enables you to specify the protocols, ports, and source IP ranges that can reach your instances using security groups
  • Static IPv4 addresses for dynamic cloud computing, known as Elastic IP addresses
  • Metadata, known as tags, that you can create and assign to your Amazon EC2 resources
  • Virtual networks you can create that are logically isolated from the rest of the AWS cloud and that you can optionally connect to your own network, known as virtual private clouds(VPCs)


Amazon's EC2 provides essentially three functionalities:

  • virtual machine provisioning
  • network provisioning (including firewalls)
  • block storage provisioning (persistent volumes)


EC2 includes the following components:

  •  AMI & Instance
  • Region & Zones
  • Storage
  • Networking and Security
  • Monitoring
  • Auto Scaling
  • Load Balancer AMI and Instance

Amazon Machine Image (AMI) is a template for software configuration (Operating System, Application Server, and Applications). Amazon publishes many AMI for public use and Custom AMIs provided by community members. On this platform, user can create their own AMI.

Instance is an AMI running on virtual servers in the cloud and instance type specifies the different operating environments. Each instance type offers different compute and memory facilities to each user.

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