Apa iku Amazon S3?

Question

Apa iku Amazon S3?

Accepted Answer

**S3** (Simple Storage Service) yaiku layanan **object storage** AWS — nyimpen file (object) kanthi ukuran lan kuantitas sing meh tanpa batas, kanthi tahan lama lan skalabel, bisa diakses liwat internet. Iku salah siji layanan AWS sing paling banyak digunakake, cocok kanggo file, backup, static asset, data lake, lan liyane.

## Apa iku S3

```text
S3 stores OBJECTS (files + metadata) in BUCKETS (containers):
  → store ANY amount of data, files of any type (up to 5TB each)
  → highly DURABLE (99.999999999% — "11 nines") and available
  → accessed via APIs/URLs (not a filesystem — it's object storage, key→object)
  → virtually unlimited scale; pay for what you store and transfer
```

## Konsep kunci

```text
BUCKET → a container for objects (globally-unique name)
OBJECT → a file + metadata, identified by a KEY (its name/path in the bucket)
KEY → the object's unique identifier within a bucket (e.g. "images/photo.jpg")
STORAGE CLASSES → tiers by access/cost: Standard, Infrequent Access, Glacier (archival)
```

## Kasus panggunaan umum

```text
✓ Static website hosting (HTML/CSS/JS/images)
✓ STORING user uploads, images, videos, documents
✓ BACKUPS and archives (with Glacier for cheap long-term storage)
✓ Data LAKES / big data storage and analytics
✓ Serving static assets (often via CloudFront CDN)
✓ Storing logs, build artifacts, ML datasets
```

## Akses lan keamanan

```text
✓ Access controlled by IAM policies, bucket policies, ACLs
⚠️ Buckets are PRIVATE by default — but MISCONFIGURED public buckets have caused MANY
   data breaches (sensitive data exposed publicly). Be careful with public access!
✓ Encryption (at rest and in transit), versioning, lifecycle rules (auto-tiering/deletion)
```

## Mengapa iki penting

Pamahaman babagan S3 iku fundamental amarga iku salah siji layanan AWS sing paling banyak digunakake lan serbaguna — standar kanggo nyimpen file lan data ing cloud — dadi iku pengetahuan dasar AWS sing penting banget.

S3 nyedhiyakake **object storage** sing sangat **durable** (eleven nines of durability), skalabel (meh tanpa batas), lan bisa diakses liwat internet — nggawe iku solusi pilihan kanggo jangkauan kebutuhan sing sangat luas: nyimpen unggahan pengguna (image, video, document), hosting website lan asset statis, backup lan archive (kanthi Glacier tier sing murah kanggo storage jangka panjang), data lake kanggo analytics, lan nyimpen log, artifact, lan dataset.

Pamahaman babagan **konsep kunci** (bucket minangka kontainer, object minangka file sing diidentifikasi dening key, lan storage class kanggo trade-off biaya/akses) kudu ana kanggo nggunakake S3 kanthi efektif.

Pamahaman babagan **aspek keamanan** sangat penting: sanajan bucket **pribadi ing default**, **bucket S3 publik sing salah konfigurasi nyebabake akeh pelanggaran data high-profile** (data sensitif sing ora sengaja kakehed ing internet publik) — kegagalan keamanan nyata sing terkenal lan berulang — dadi pamahaman babagan access control (IAM/bucket policy) lan bahaya akses publik sing salah konfigurasi iku pengetahuan kritis sing nyegah exposure data sing serius.

Ngerti babagan encryption, versioning, lan lifecycle rule nggambarake panggunaan S3 sing praktis.

Amarga S3 iku layanan AWS universal lan fundamental sing digunakake kanggo nyimpen meh kabeh jenis data, lan amarga pamahaman iku (object-storage model, kasus penggunaan, lan utamane pertimbangan keamanan kritis babagan public bucket misconfiguration) iku penting kanggo gawe kanthi AWS, pamahaman babagan S3 iku pengetahuan dasar AWS sing penting — salah siji layanan sing paling penting kanggo dimangerteni, pusat babagan cara data lan file disimpen ing cloud, lan layanan sing awareness keamanan babagan public-bucket misconfiguration iku bener-bener penting kanggo nyegah pelanggaran nyata.