Apa iku Amazon EC2?

Question

Apa iku Amazon EC2?

Accepted Answer

**EC2** (Elastic Compute Cloud) nyedhiyakake **server virtual** (instances) sing bisa diubah ukurane ing cloud — sampeyan bisa ngluncurake, ngonfigurasike, lan njalanake mesin virtual miturut kabutuhan. Iki minangka salah sawijining layanan inti lan fundamental AWS kanggo njalanake aplikasi.

## Apa iku EC2

```text
EC2 = virtual servers ("instances") you rent and run in AWS's cloud:
  → launch a VM in minutes (choose OS, CPU, memory, storage)
  → full control (it's your server — install software, configure as you like)
  → pay for the time it runs (per-second/hour)
  → "Elastic" — launch many, scale up/down, resize as needed
```

## Konsep-konsep kunci

```text
INSTANCE TYPE → the hardware profile: CPU/memory/network (e.g. t3.micro small,
  m5.large general, c5 compute-optimized, r5 memory-optimized) — pick by workload
AMI (Amazon Machine Image) → the template (OS + pre-installed software) to launch from
KEY PAIR → SSH keys to securely access (log into) the instance
SECURITY GROUP → a virtual firewall (which ports/traffic are allowed)
EBS VOLUME → attached disk storage (persists data)
ELASTIC IP → a static public IP address
```

## Ngluncurake lan nggunakake instance

```bash
# typically via the Console, CLI, or IaC:
aws ec2 run-instances --image-id ami-xxx --instance-type t3.micro --key-name mykey
# then SSH in:
ssh -i mykey.pem ec2-user@<public-ip>
# install/run your app on the instance like any Linux/Windows server
```

## Model pricing

```text
ON-DEMAND → pay per use, no commitment (flexible, most expensive)
RESERVED / SAVINGS PLANS → commit 1-3 years for big discounts (steady workloads)
SPOT → spare capacity at huge discounts, but can be reclaimed (fault-tolerant workloads)
```

## Kenapa iki penting

Pamahaman babagan EC2 iku fundamental amarga iku salah siji saka layanan inti lan paling-dipigunaake ing AWS — nyedhiyakake server virtual sing njalanake macem-macem aplikasi — dadi iku pengetahuan AWS fundamental sing penting.

EC2 makili kemampuan cloud dasar yaiku **njalanake server virtual miturut kabutuhan**: ngluncurake mesin virtual ing sawetara menit (milih OS, CPU, memory, lan storage), duwe kontrol lengkap kanggo nginstal lan ngonfigurasike software miturut perlu, mung mbayar kanggo wektu njalanake, lan bisa berkembang kanthi elastis.

Iki minangka saumpama cloud saka duwe server, nggawe EC2 minangka blok bangunan fundamental kanggo ndu-ung aplikasi, website, database, lan meh kabeh workload.

Pamahaman babagan **konsep-konsep kunci** — tipe instance (nyambung profil hardware menyang workload), AMI (template kanggo ngluncurake), key pair (akses aman), security group (aturan firewall), volume EBS (storage), lan elastic IP — iki perlu kanggo bener-bener ngluncurake lan nggunakake EC2 kanthi efektif.

Pamahaman babagan **model pricing** (on-demand kanggo fleksibilitas, reserved/savings plan kanggo workload tetap kanthi diskon, lan spot instance kanggo penghematan besar-besaran ing workload sing tahan terhadap kesalahan) iku praktis penting kanggo nggunakake EC2 kanthi hemat biaya, sawijining pertimbangan real-world sing signifikan.

Kamrout EC2 minangka layanan AWS inti lan kathah dipigunaake (fondasi server virtual sing njalanake kathah aplikasi) lan pamahaman babagane (konsep, konsep-konsep kunci, lan model pricing) iku fundamental kanggo gawé karo compute AWS, pamahaman EC2 iku pengetahuan AWS fundamental sing penting — salah siji saka layanan pisanan sing kudu dimangerteni nalika sinau AWS lan minangka blok bangunan sing ndasari sawetara saka apa sing njalanake ing platform, nggawe iki pengetahuan penting kanggo sapa wae sing gawé karo infrastruktur AWS.