Question

What are the practical differences between AWS EFS, EBS and S3?

Based on what i understood

• S3 is a storage facility accessible any where

• EBS is a device you can mount onto EC2

• EFS is a file system you can mount onto EC2

So why would I use EBS over EFS? Seem like they have the same use cases but minor semantic differences? Although EFS is replicated across AZs where as EBS is just a mounted device. Why choose S3 over EFS? They both store files, scale and are replicated. What is the real difference?

Answer 1

EFS 

• It is a file storage connected with one or more instance 
• It would not be available in your region
• it is expensive compared to the EBS
• It is scalable
• Faster than S3 but slower than EBS
• Good for sharable workloads and application

EBS

• Block storage which is attached with only one instance in a particular region
• The data's are stored in the bocks of the same size and arranged in a hierarchical manner
• If you need multiple EBS with the same data then we can create it through snapshots 
• It the fastest among the all
• Hardly scalable
• It is meant to be the EC2 drive

S3

• It is an object storage
• The information can be stored in the form of file and folders but it would have some security issues
• It is highly scalable
• Cheapest among the all
• We can host a static website, as content can be delivered through the internet