AWS organise son infrastructure mondiale en régions (emplacements géographiques) et zones de disponibilité (centres de données isolés au sein d'une région). Les comprendre est fondamental pour concevoir des applications fiables (tolérantes aux pannes) et performantes (faible latence).
Régions — emplacements géographiques
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)
