Infrastructure Flashcards
What is region?
Regions are geographic locations worldwide where AWS hosts its data centers. AWS Regions are named after the location where they reside.
What is (AZ)Availability Zone?
Availability Zones
Inside every Region is a cluster of Availability Zones. An Availability Zone consists of one or more data centers with redundant power, networking, and connectivity. These data centers operate in discrete facilities in undisclosed locations. They are connected using redundant high-speed and low-latency links.
Availability Zones also have code names. Because they are located inside Regions, they can be addressed by appending a letter to the end of the Region code name.
us-east-1a is an Availability Zone in us-east-1 (N. Virginia Region).
sa-east-1b is an Availability Zone in sa-east-1 (São Paulo Region).
What is edge location?
Edge locations are global locations where content is cached. For example, if your media content is in London and you want to share video files with your customers in Sydney, you could have the videos cached in an edge location closest to Sydney. This would make it possible for your customers to access the cached videos more quickly than accessing them from London. Currently, there are over 400+ edge locations globally.
Amazon CloudFront delivers your content through a worldwide network of edge locations. When a user requests content that is being served with CloudFront, the request is routed to the location that provides the lowest latency. So that content is delivered with the best possible performance. CloudFront speeds up the distribution of your content by routing each user request through the AWS backbone network to the edge location that can best serve your content.
