====== S3 (Simple Storage Service) ======

**What it is:** Object storage for files (objects) stored inside buckets.

**What it’s for:**
  * Store static assets (images, videos, PDFs), backups, logs.
  * Build data lakes and durable storage.
  * Host static websites (in some cases).

**Key ideas:**
  * Core concepts: [[aws:storage:s3:bucket|Bucket]] and [[aws:storage:s3:object|Object]].
  * Access control: IAM + [[aws:storage:s3:bucket-policy|Bucket Policy]].
  * Encryption options: [[aws:storage:s3:encryption|Encryption]].
  * Lifecycle and storage classes reduce cost.

**Exam cues:**
  * “store files with high durability” → S3.
  * “static content for global users” → S3 + CloudFront.

**Hard words (English + IPA + Vietnamese meaning):**
  * *object* /ˈɑːbdʒekt/: đối tượng (file + metadata)
  * *durability* /ˌdʊrəˈbɪləti/: độ bền dữ liệu
  * *static* /ˈstætɪk/: tĩnh (không thay đổi theo request)
  * *bucket* /ˈbʌkɪt/: “thùng” chứa object

**Child pages:**
  * [[aws:storage:s3:bucket|Bucket]]
  * [[aws:storage:s3:object|Object]]
  * [[aws:storage:s3:object-lock|S3 Object Lock & Retention]]
  * [[aws:storage:s3:storage-classes|Storage Classes]]
  * [[aws:storage:s3:versioning|Versioning]]
  * [[aws:storage:s3:lifecycle|Lifecycle Rules]]
  * [[aws:storage:s3:encryption|Encryption (SSE-S3 / SSE-KMS)]]
  * [[aws:storage:s3:bucket-policy|Bucket Policy]]
  * [[aws:storage:s3:pre-signed-url|Pre-signed URL]]
  * [[aws:storage:glacier|S3 Glacier]]
  * [[aws:storage:s3:transfer-acceleration|S3 Transfer Acceleration (S3TA)]]