AWS Overview Flashcards
The AWS Global Infrastructure is built around regions and availability zones
regions and availability zones
Regions provide multiple, physically separated and isolated availability zones which are connected with low latency, high throughput, and highly redundant networking
Regions
Availability Zones offer high availability, fault tolerance, and scalability. AZs consist of one or more discrete data centers, each with redundant power, networking, and connectivity, housed in separate facilities. An availability zone is represented by a region code followed by a letter identifier, for example: us-east-1a
AZs
An AWS Local Region is a single datacenter designed to complement an existing AWS region. An AWS Local Zone places AWS compute, storage, database, and other select services closer to large population, industry, and IT centers where no AWS region exists today
Local
To deliver low-latency content to users around the globe, AWS has placed points of presence, which are either edge locations or edge caches. These points are used by Cloudfront and Lambda@edge services
Edge
Edge locations are locations where end users access services located at AWS
Edge locations
There are 3 fundamental drivers of cost with AWS: compute, storage, outbound data transfer
costs
For certain services like EC2, EMR, and RDS you can invest in reserved capacity. With reserved instances, you can save up to 75% over equivalent on-demand capacity.
reserved
With the all upfront option you pay for the entire reserved instance term with one upfront payment. This option provides you with the largest discount compared to on-demand instance pricing
All upfront
With partial upfront option, you make a low upfront payment and are then charged a discounted hourly rate for the instance for the duration of the reserved instance term
partial upfront
The no upfront option does not require any upfront payment and provides a discounted hourly rate for the duration of the term
no upfront
