AmazonEBS : High-availability block-level storage volumes for Amazon Elastic Compute Cloud (EC2) instances.
- It is paired with an EC2 instance. So when we need a high-performance storage service for a single instance, use EBS
- It stores data on a filesystem which is retained after the EC2 instance is shut down.
Amazon EFS : Offers scalable file storage, also optimized for EC2. Using an EFS file system, you can configure instances to mount the file system.
Amazon S3 : An object store good at storing vast numbers of backups or user files.
Unlike EBS or EFS, S3 is not limited to EC2.
Files stored within an S3 bucket can be accessed programmatically or directly from services such as AWS CloudFront.
This is why many websites use it to hold their content and media files, which may be served efficiently from AWS CloudFront.
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