aws global infrastructure

kind of infra

1. regions:
   cluster of data center
2. availability zone (AZ)

• usually 3, min 3, max 6
• one or more discrete data center
• separate from each others, so that isolated from disasters

3. Data center

• rack
• host
• instance

4. aws edge locations / points of presence

   400+ points of presence(400+ edge locations, 10+ regional cathes) in 90+ cities across 40+ contries

global scope services, region scope services

1. global

• IAM
• DNS services
• CDN
• WAF

2. region

• ec2
• lambda
• rekognition

how to choose region

1. compliance with data governance and legal requirements
2. proximity to customers
3. available services within a region
4. pricing