Sunday, March 5, 2017

About AWS Infrastructure

AWS infrastructure has below main concepts which we will use on our daily activities. So a small description about the key concepts. Please ping your queries in comments field.

Region - Any Geographic location where Amazon has datacenter is know as Region. As of today (05/03/2017) there are 16 regions available. In a region minimum 2 datacenter's will be there.

Availablity Zones - An individual datacenter in the region is known as AZ. AZ's in the region will have seperate Power, cooling fan, etc.. AZ's wont share their resources but between AZ's there will be low latency private network. This Multi AZ will help us to a deploy a services in High Availablity.

Edge Locations  - Points of presence where AWS Content Delivery Network service is present is known as Edge Location. In AWS Cloudfront is the CDN service. As of now there are 60+ Edge locations.

Scope of Services

In AWS there are some services which will be available only to respective AZ/Region. Below are the list of some of the services and its scope. For eg; EBS volume is AZ specific, so if you create a EBS volume in an AZ-A then you can't attach the volume to EC2 in AZ-B.

AZ           - EC2, RDS, EBS volume, Redshift Node, Subnets, EFS
Regional - S3, AMI, Snapshot, Dynamodb, VPC, SQS, SNS, Cloudwatch, Cloudtrial
Global     - IAM, Route 53, Cloudfront Distribution

Service Limit Number of resources we can provision per service.

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