What is AWS EC2?
● EC2 stands for Elastic Compute Cloud.
● Amazon EC2 is the virtual machine in the Cloud Environment.
● Amazon EC2 provides scalable capacity. Instances can scale up and down
automatically based on the traffic.
● You do not have to invest in the hardware.
● You can launch as many servers as you want and you will have complete
control over the servers and can manage security, networking, and storage.
Instance Type:
● Instance type is providing a range of instance types for various use cases.
● The instance is the processor and memory of your EC2 instance.
EBS Volume:
● EBS Stands for Elastic Block Storage.
● It is the block-level storage that is assigned to your single EC2 Instance.
● It persists independently from running EC2.
o Types of EBS Storage
▪ General Purpose (SSD)
▪ Provisioned IOPS (SSD)
▪ Throughput Optimized Hard Disk Drive
▪ Cold Hard Disk Drive
▪ Magnetic
Instance Store: Instance store is the ephemeral block-level storage for the EC2
instance.
● Instance stores can be used for faster processing and temporary storage of
the application.
AMI: AMI Stands for Amazon Machine Image.
● AMI decides the OS, installs dependencies, libraries, data of your EC2
instances.
● Multiple instances with the same configuration can be launched using a
single AMI.
Security Group: A Security group acts as a virtual firewall for your EC2 Instances.
● It decides the type of port and kind of traffic to allow.
● Security groups are active at the instance level whereas Network ACLs are
active at the subnet level.
● Security Groups can only allow but can’t deny the rules.
● The Security group is considered stateful.
● By default, in the outbound rule all traffic is allowed and needs to define the
inbound rules.
Key Pair: A key pair, consisting of a private key and a public key, is a set of
security credentials that you can use to prove your identity while connecting to an
instance.

● Amazon EC2 instances use two keys, one is the public key which is attached
to your EC2 instance.
● Another is the private key which is with you. You can get access to the EC2
instance only if these keys get matched.
● Keep the private key in a secure place.
Tags: Tag is a key-value name you assign to your AWS Resources.
● Tags are the identifier of the resource.
● Resources can be organized well using the tags.
Pricing:
● You will get different pricing options such as On-Demand, Savings Plan,
Reserved Instances, and Spot Instances.