AWS menyusun infrastruktur globalnya kepada Regions (lokasi geografi) dan Availability Zones (pusat data terpencil dalam sesuatu region). Memahaminya adalah asas untuk mereka bentuk aplikasi yang boleh dipercayai (tahan kesalahan) dan berprestasi (latensi rendah).
Regions — lokasi geografi
A REGION is a geographic area with AWS infrastructure (e.g. us-east-1 Virginia,
eu-west-1 Ireland, ap-southeast-1 Singapore):
→ choose regions based on: proximity to USERS (lower latency), data RESIDENCY/
compliance (where data must legally reside), service availability, and cost
→ regions are isolated from each other (a region's issues don't affect others)
