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Module 4 — Going Global (Global Infrastructure)

Status: ✅ done · Domain 3 · Full notes in the Study hub → Domain 3 Global Infrastructure.

Key points

• Hierarchy: Region (geographic area) → Availability Zones (AZs) (1+ discrete data centers, isolated, low-latency linked) → Edge Locations (many more, for caching/CDN).
• Regions — isolated; data stays in a Region unless you move it (compliance/residency). Choose a Region by 4 factors: ① compliance ② proximity/latency ③ service availability ④ pricing.
• AZs — deploy across ≥2 AZs → high availability / fault tolerance.
• Amazon CloudFront — CDN; caches content at edge locations near users.
• AWS Local Zones — compute/storage closer to users (latency-sensitive).
• AWS Wavelength — compute in 5G networks (ultra-low latency to mobile).
• AWS Outposts — AWS infrastructure in your data center (hybrid).

Exam: multi-AZ = HA · Region choice = compliance/latency/services/price · CloudFront+Edge = cache near users.