EC2

Elastic Cloud Compute

Compute: closely related to CPU/RAM

EC2 is a popular service. Other related services are here.

https://aws.amazon.com/products/compute/

EC2 service can be broken down into the following

AMI (Amazon Machine Images)

Instance Types

Instance Purchasing Options

Tenancy

User Data

Storage Options

Security

AMI - Image baseline with an OS, systems, and applications along with any custom configuration.

Custom AMI can also be built with user-defined customizations.

EC2 Instance Types

ECU - EC2 Units

vCPU - virtual CPU

Processor - Type of Processor

AES - Adv encryption system

AVX - adv vector extensions audio /video

Turbo - whether supports turbo boost or not

Purchasing Options

• On-Demand

• Reserved

• Scheduled

• Spot

• On-Demand Capacity Reservations

On-Demand

• It can be launched any time and used for as long as needed.

• Flat rate.

• Ideal for development and testing.

Reserved

• Purchases for a set period for a reduced cost.

• Complete payment for 1 or 3 year time. Big discount.

• Partial upfront payment for a smaller discount.

• No Upfront. The smallest discount is applied.

• Best suited for long-term, predictable workloads.

Scheduled

• Reservations on a recurring schedule daily/weekly/monthly.

• Even if the instance is not used, customers will be charged.

Best suited for scheduled workloads.

Spot Instances

• Bid for unused EC2 computes resources.

• No guarantees for a fixed period.

• Fluctuation of prices based on supply and demand.

• Chances instance will be taken away if someone bids a higher price.

• Purchase large EC2 instances at very low prices.

• Nonpriority tasks.

On-Demand Capacity Reservation

• Reserve based on different requirements such as AMI, platform, and AZ for a given time.

Tenancy

Shared Tenancy

• Any available host with required hosts.

• Multiple customers may use the same host.

Dedicated Instance

• Hosted on hardware that no other customers can access.

• Incur additional charges.

• It may be required to meet compliance.

Dedicated Host

• Similar to Dedicated Instance

• Additional visibility and control of the physical host.

• Allows you to use existing Software license (for example, windows server license purchased outside AWS)

• Allows using the same host for several instances.

Storage

Persistent Storage

• Elastic Block Storage (EBS) Volumes / Logically attached via AWS network.

• Automatically replicated.

• Encryption is available.

Ephemeral Storage - Local storage

• Physically attached to the underlying host.

• When the instance is stopped or terminated, all the data is lost.

• Rebooting will keep the data intact.

DEMO - Deploy EC2