AWS Global Infrastructure Flashcards
AWS Global Infrastructure consists of…
Regions, Availability Zones, Edge Locations
What is a Region?
A Region is a geographical area. Each Region consists of 2 or more Availability Zones.
What is an Availability Zone?
An Availability Zone (AZ) is simply a data center.
What are Availability Zones, physically?
They are facilities that are close to each other but not dependent on one another. For example, one AZ in Manhattan, another in New Jersey.
Why are AZs isolated/independent from one another?
E.g. in case there is a flood in one (e.g. Manhattan), the other (NJ) won’t be affected.
T/F: There is low latency between 2 AZs in the same region.
True
What is an Edge Location?
Edge locations are CDN endpoints for CloudFront.
What is an example of what CDN used for?
To cache large media files in the cloud. Example: if I am a user in NY and if I want to download a video hosted in Australia, the first time, the video has to travel to the edge location in NY prior to downloading. Next time, the video would be cached at the NY edge location.
