Apa iku AWS Regions lan Availability Zones?

Question

Accepted Answer

AWS ngatur infrastruktur globalé dadi **Regions** (lokasi geografi) lan **Availability Zones** (data center sing terisolasi ing sajroning region). Ngerti iki penting banget kanggo ndesain aplikasi sing reliable (fault-tolerant) lan performan (latency murah).

## Regions — lokasi geografi

```text
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)
```

## Availability Zones — data center sing terisolasi

```text
Each region has multiple AVAILABILITY ZONES (AZs) — physically separate data centers
within the region (e.g. us-east-1a, us-east-1b, us-east-1c):
  → each AZ has independent power, cooling, networking (isolated failures)
  → AZs in a region are connected by fast, low-latency links
  → designed so one AZ failing doesn't take down the others
```

## Nggunakake akeh AZ kanggo high availability

```text
Deploy across MULTIPLE AZs so your app survives an AZ failure:
  → run EC2 instances in 2+ AZs behind a load balancer
  → RDS Multi-AZ (standby in another AZ)
  → if one AZ fails, the others keep serving → HIGH AVAILABILITY
→ This is a FUNDAMENTAL reliability practice: never put everything in one AZ.
```

## Dene iki penting

Ngerti Regions lan Availability Zones iku penting banget amarga iku dhasar kanggo ndesain aplikasi AWS sing **reliable lan performan**, dadi iki penting banget pengetahuan dasar AWS. **Regions** (lokasi geografi infrastruktur AWS) penting kanggo milih ngendi kanggo deploy adhedhasar **kedurmukan kalihan user** (latency murah kanggo performa luwih apik), **data residency lan compliance** (syarat hukum babagan ngendi data uripé—penting kanggo industri sing diatur), ketersediaan serbis, lan biaya—dadi ngerti regions nambang ngendi aplikasi kudu mlaku. **Availability Zones** (data center sing fisik lain-lain, kutha-kutha mandiri ing sajroning region) dadi konci kanggo **fault tolerance**: amarga AZ duwe kegagalan sing terisolasi (kutha, pendingin, jaringan mandiri) nanging nyambung karo link cepet, mendeploy **ing akeh AZ** terang aplikasi bisa selamat saka kegagalan data center (AZ) kabeh.

Ngerti iki **multi-AZ high-availability pattern**—mlakoni sumber daya ing akeh AZ (EC2 konèk karo load balancer, RDS Multi-AZ) supaya kegagalan AZ siji ora mateni aplikasi—iki praktek reliability dhasar, bisa dadi konsep reliability paling penting ing AWS: ora nggawe kabeh ing AZ siji.

Ngerti regions lan AZ dadi penting banget kanggo rong kaprihatinan inti: **performa** (pilihan region kanggo latency lan compliance) lan utama **reliability** (deployment multi-AZ kanggo fault tolerance).

Dene ndesain aplikasi cloud sing reliable, performan fundamentalé adhing geografi (regions) lan fault-isolation (AZs) struktur AWS, lan dene multi-AZ pattern dadi praktek high-availability dhasar, ngerti Regions lan Availability Zones iku penting banget, pengetahuan dasar AWS—konsep inti sing dhasar reliable AWS architecture lan kudu kanggo ndesain aplikasi sing duwe performa apik lan tahan rusaké failure infrastruktur.