AWS Storage: Which Service Should You Choose for Your Needs and Budget?

1. S3: Simple and Affordable Storage

S3 = Storage for files and static websites

Approximate costs:

• Storage: ~$0.023 per GB/month
• Outbound data transfer: ~$0.09 per GB
• Requests: ~$0.0004 per 1,000 requests

Who is it for?

• Static websites
• Backups
• Media files (images, videos)
• Archive data

Budget benefits:

• You only pay for what you use
• No minimum cost
• Volume-based tiered pricing

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2. EBS: Storage for Servers

EBS = Disks for your EC2 servers

Approximate costs:

• gp3 (SSD): ~$0.08 per GB/month
• io1 (high-performance SSD): ~$0.125 per GB/month
• st1 (HDD): ~$0.045 per GB/month

Who is it for?

• Applications running on EC2
• Databases
• Applications that require consistent performance

Budget benefits:

• Flexible choices based on your needs
• Ability to change volume types
• Snapshots for cost-effective backups

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3. EFS: Shared Storage

EFS = Storage shared across multiple servers

Approximate costs:

• Standard: ~$0.30 per GB/month
• Infrequent Access: ~$0.025 per GB/month
• Provisioned: Fixed price based on reserved capacity

Who is it for?

• Distributed applications
• Containers sharing data
• Big data and analytics

Budget benefits:

• Scales automatically
• No capacity planning required
• Infrequent Access option for rarely accessed data

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Cost Comparison Table

Service	Use Case	Cost per GB/month	Main Advantage
S3	Static files, media	~$0.023	The cheapest, perfect for simple storage
EBS	Servers, databases	~$0.08	Consistent performance, integrated with servers
EFS	Shared storage	~$0.30	Easy sharing across multiple servers

Tips for Saving Money:

1. For S3:

   • Use the appropriate storage classes (Standard, IA, Glacier)
   • Enable lifecycle rules to archive old files
   • Compress your data when possible

2. For EBS:

   • Choose gp3 for most use cases
   • Use snapshots for backups
   • Resize your volumes based on your needs

3. For EFS:

   • Use Infrequent Access for rarely accessed data
   • Monitor your usage
   • Share across multiple applications to optimize costs

Key Takeaways:

The right choice depends on your use case:

• S3 for simple, affordable storage
• EBS for server performance
• EFS for sharing across servers