AWS S3 Introduction - Cloud Storage Basics

What You’ll Learn in This Tutorial

✓ S3 basic concepts
✓ Bucket creation and management
✓ Object upload and download
✓ Access control (IAM, bucket policies)
✓ Static website hosting
✓ Operations with AWS CLI/SDK

Prerequisites

• AWS account
• AWS CLI installed

Step 1: AWS CLI Setup

# Install AWS CLI (macOS)
brew install awscli

# Configure credentials
aws configure
# AWS Access Key ID: YOUR_ACCESS_KEY
# AWS Secret Access Key: YOUR_SECRET_KEY
# Default region name: ap-northeast-1

Step 2: Creating a Bucket

# Create bucket
aws s3 mb s3://my-tutorial-bucket-2024

# List buckets
aws s3 ls

Step 3: Object Operations

# Upload
aws s3 cp local-file.txt s3://my-tutorial-bucket-2024/

# Download
aws s3 cp s3://my-tutorial-bucket-2024/file.txt ./

# Sync
aws s3 sync ./local-folder s3://my-tutorial-bucket-2024/folder/

Step 4: Access Control

{
    "Version": "2012-10-17",
    "Statement": [
        {
            "Effect": "Allow",
            "Principal": "*",
            "Action": "s3:GetObject",
            "Resource": "arn:aws:s3:::my-bucket/public/*"
        }
    ]
}

Step 5: Static Web Hosting

aws s3 website s3://my-website-bucket \
  --index-document index.html \
  --error-document error.html

Summary

AWS S3 is a scalable, highly durable object storage service.