EC2 provides a virtual computing environment allowing users to launch instances with different operating systems. Users can specify availability zones, key pairs, and security groups when launching instances. Amazon Machine Images contain the information required to launch instances and can be shared, copied to different regions, or deregistered. EC2 offers various instance types optimized for tasks like machine learning, graphics, storage, and high I/O. Features include elastic IP addresses, auto scaling, multiple locations, and time sync services. Users pay based on actual resources consumed.

1. AMAZON SERVICES – EC2
Eng. Ismail Anjrini

2. EC2
• Presents a true virtual computing environment
• Allowing you to use web service interfaces to launch instances with a variety of
operating systems
• Manage your network’s access permissions
• Run your image using as many or few systems as you desire

3. EC2
• The instance is an Amazon EBS-backed instance (meaning that the root volume is
an EBS volume)
• You can either specify the Availability Zone in which your instance runs, or let
Amazon EC2 select an Availability Zone for you
• You secure ec2 instance by specifying a key pair and security group
• When you connect to your instance, you must specify the private key of the key pair
that you specified when launching your instance

4. AMAZON MACHINE IMAGES (AMI)
• Provides the information required to launch an instance
• You must specify a source AMI when you launch an instance
• You can launch multiple instances from a single AMI when you need multiple
instances with the same configuration
• You can use different AMIs to launch instances when you need instances with
different configurations

5. AMI TYPES
• You can select an AMI to use based on the following characteristics:
• Region
• Operating system
• Architecture (32-bit or 64-bit)
• Launch Permissions
• Storage for the Root Device

6. AMI TYPES - LAUNCH PERMISSIONS
•The owner grants launch permissions
to all AWS accounts.public
•The owner grants launch permissions
to specific AWS accounts.explicit
•The owner has implicit launch
permissions for an AMI.implicit

7. AMI TYPES - STORAGE FOR THE ROOT
DEVICE
• AMIs are categorized as either:
• backed by Amazon EBS: The root device is an Amazon EBS volume created from an
Amazon EBS snapshot
• backed by instance store: The root device is an instance store volume created from a
template stored in Amazon S3

8. AMI TYPES - STORAGE FOR THE ROOT
DEVICE
Characteristic Amazon EBS-Backed AMI Amazon Instance Store-Backed AMI
Boot time for an instance Usually less than 1 minute Usually less than 5 minutes
Size limit for a root device 16 TiB 10 GiB
Root device volume Amazon EBS volume Instance store volume
Data persistence By default, the root volume is deleted when the instance terminates.* Data on any other
Amazon EBS volumes persists after instance termination by default. Data on any instance
store volumes persists only during the life of the instance.
Data on any instance store volumes persists only during the life of the instance. Data on any Amazon
EBS volumes persists after instance termination by default.
Modifications The instance type, kernel, RAM disk, and user data can be changed while the instance is
stopped.
Instance attributes are fixed for the life of an instance.
Charges You're charged for instance usage, Amazon EBS volume usage, and storing your AMI as
an Amazon EBS snapshot.
You're charged for instance usage and storing your AMI in Amazon S3.
AMI creation/bundling Uses a single command/call Requires installation and use of AMI tools
Stopped state Can be placed in stopped state where instance is not running, but the root volume is
persisted in Amazon EBS
Cannot be in stopped state; instances are running or terminated

9. USING AN AMI
• After you create and register an AMI:
• you can share it with a specified list of AWS accounts
• You can keep it private so that only you can use it
• You can also make your custom AMI public so that the community can use it
• You can copy an AMI within the same region or to different regions
• When you no longer require an AMI, you can deregister it
• You can purchase AMIs from a third party

10. EC2 - FEATURES
• Bare Metal Instances
• GPU Compute Instances
• GPU Graphics Instances
• High I/O Instances
• Dense Storage Instances
• Flexible Storage Options
• Paying for What You Use

11. EC2 - FEATURES
• Multiple Locations
• Elastic IP Addresses
• Amazon EC2 Auto Scaling
• High Performance Computing (HPC) Clusters
• Enhanced Networking
• Available on AWS PrivateLink
• Amazon Time Sync Service

12. BARE METAL INSTANCES
• Provide your applications with direct access to the processor and memory of the
underlying server
• Ideal for workloads that require access to hardware feature sets
• For applications that need to run in non-virtualized environments for licensing or
support requirements
• Bare Metal instances are built on the Nitro system
• Instance type: I3
• Request form
• https://pages.awscloud.com/amazon-ec2-bare-metal-instances-preview.html

13. GPU COMPUTE INSTANCES
• Instance type: P3
• Ideally suited for machine learning
• High-performance computing
• Computational fluid dynamics
• Computational finance
• Seismic analysis
• Molecular modeling
• Genomics, and rendering workloads

14. GPU GRAPHICS INSTANCES
• Instance type: G3
• Are ideally suited for 3D visualizations
• Graphics-intensive remote workstation
• 3D rendering
• Application streaming
• Video encoding, and other server-side graphics workloads

15. HIGH I/O INSTANCES
• Are an Amazon EC2 instance type that can provide customers with random I/O rates
over 3 million IOPS
• High I/O I3 instances are backed by Non-Volatile Memory Express (NVMe) based SSDs
• Are ideally suited for customers running:
• very high performance NoSQL databases
• Transactional systems
• Elastic Search workloads
• High I/O instances also offers sequential disk throughput up to 16 GB/s, which is ideal
for analytics workloads

16. FLEXIBLE STORAGE OPTIONS
• Elastic Block Store
• Elastic File System

17. PAYING FOR WHAT YOU USE
• You will be charged at the end of each month for your EC2 resources actually
consumed
• Partial instance hours consumed are billed as full hours

18. MULTIPLE LOCATIONS
• The Amazon EC2 Service Level Agreement commitment is 99.95% availability for
each Amazon EC2 Region
• Daily: 43.2s
• Weekly: 5m 2.4s
• Monthly: 21m 54.9s
• Yearly: 4h 22m 58.5s
• Amazon EC2 provides the ability to place instances in multiple locations
• Regions
• Availability Zones

19. ELASTIC IP ADDRESSES
• Are static IP addresses designed for dynamic cloud computing
• Is associated with your account not a particular instance
• You control that address until you choose to explicitly release it
• Elastic IP addresses allow you to mask instance or Availability Zone failures by
programmatically remapping your public IP addresses to any instance in your
account
• Elastic IP address is for use in a specific region only

20. AMAZON EC2 AUTO SCALING
• EC2 Auto Scaling allows you to automatically scale your Amazon EC2 capacity up or
down according to conditions you define
• EC2 Auto Scaling is enabled by Amazon CloudWatch and available at no additional
charge beyond Amazon CloudWatch fees
• Automatically scale in and out
• Choose when and how to scale
• Fleet management
• Support for multiple instance types
• Included with Amazon EC2

21. AMAZON TIME SYNC SERVICE
• There is no additional charge for using this service
• Provides a highly accurate and reliable time reference that is natively accessible from
Amazon EC2 instances
• Utilizes a fleet of redundant satellite-connected and atomic reference clocks in AWS
regions to deliver current time readings of the Coordinated Universal Time (UTC) global
standard
• The Amazon Time Sync Service automatically smooths out (smears) leap seconds that
are periodically added to UTC
• EC2 instances running in Amazon Virtual Private Cloud (VPC) can access this service at
a universally reachable IP address