AWS Global Infrastucture

1. Region

- Fully independent and isolated.

2. Availibility Zones (AZ)

- Data center level, can have multiple AZ's in a region.
- Physically separeated.
- Provide high availibility, if one got problem other can give support instantly.

3. Edge Locations

- Like CDN, but can do lightweight computational tasks like image cropping.
- Like small data center.