Cloud Practitioner - 2. Global Infrastructure & Reliability Flashcards
What is an AWS Region (in general)?
Physical geographic locations where AWS builds data center clusters.
How many Availability Zones does a Region contain?
Three or more
How far apart are the Availability Zones in a Region?
100 km or less
How many Regions are there?
As of January, 2024
33
https://aws.amazon.com/about-aws/global-infrastructure/
Four criteria for region selection?
- Compliance - E.g., Data Sovereignty
- Features - Some features not available in all Regions
- Pricing - Some Regions are more expensive for some services
- Proximity - To user base or data source
What is an Availability Zone (in general)?
- A logical data center
How many physical data centers makes up an AZ?
**One or more **physical data centers
Do different AZs share any hardware?
AZs share no hardware or other components.
How many Availability Zones are there?
As of January, 2024
105
https://aws.amazon.com/about-aws/global-infrastructure
The six core AWS service categories?
- Compute
- Storage
- Database
- Network and Content delivery
- Security, Identity, and Compliance
- Management and Governance
How many of the 239 AWS services are available in all regions?
65
https://awsservices.info
What are the 3 failure domains of AWS services?
- Zonal
- Regional
- Global
A Zonal AWS service cannot tolerate the failure of (____)?
The Availability Zone where the service instance is deployed.
https://docs.aws.amazon.com/whitepapers/latest/aws-fault-isolation-boundaries/zonal-services.html
Is a Zonal service instance affected by the failure of a different AZ?
No!
https://docs.aws.amazon.com/whitepapers/latest/aws-fault-isolation-boundaries/zonal-services.html
A Regional AWS service cannot tolerate the failure of (____)?
The Region where the service instance is deployed
https://docs.aws.amazon.com/whitepapers/latest/aws-fault-isolation-boundaries/regional-services.html
