Fundamentals Flashcards
Six advantages of cloud computing
- Trade capital expense for variable expense
- Benefit from massive economies of scale
- Stop guesing about capacity
- Increase speed and atility
- Stop spending money running and maintaining data centers
- Go global in minutes
The 6 advantages of cloud
AWS History
How many services does AWS have?
165
How many geographical regions does AWS have?
24
What is a region?
A geographical area with 2 or more AZ, isolated from other AWS regions
What is an Availability Zone (AZ)?
One or more data centers that are physically separete and isolated from other AZs
You launch resources there (such as EC2 instances)
What is Edge Location?
A location with a cache of content that can be delivered at low latency to users - used by CloudFront
Regional Edge Cache
Also part of the CloudFront network. These are larger caches that sit between AWS services and Edge Locations
Global Network
Highly available, low-latency private global network interconnecting every data center, AZ, and AWS region
How many Availability zones are?
76
how arer the AWS Availability Zones?
AWS Global Infrastructure
AWS Pricing Models
On-Demand
Dedicated instances
Spot Instances (ex. Univerties for big volumens)
Reservations
Time reservations work at AWS
1 or 3 year term
Pay:
- no upfront,
- partial upfront
- All upfront