S3 vs. EBS vs. EFS: The 30-Second Cheat Sheet for Beginners.
A dead-simple breakdown of Amazon S3, EBS, and EFS. Master these storage options to easily ace your certification exams.
When I first started studying for my AWS certification, the storage options felt like a confusing alphabet soup. If you are struggling to remember which service does what, keep this simple cheat sheet handy:
- Amazon S3 (Object Storage): Think of this as the "Cloud Hard Drive" for the internet. It is infinitely scalable and perfect for storing static files like images, backups, videos, and web assets. You access it via the web.
- Amazon EBS (Block Storage): Think of this as a USB flash drive you plug directly into a single computer. It is tied to one specific Amazon EC2 instance and lives in a single Availability Zone. Perfect for your operating system or databases.
- Amazon EFS (File Storage): Think of this as a shared network drive. Hundreds of different EC2 instances can plug into it and read/write files at the exact same time.
Pro-tip: If the exam question mentions "shared Linux files," the answer is almost always EFS!
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