EasyExperience level: 0-2 years · 3-5 years1 min read

What is the difference between S3 and EBS?

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Concept Made Simple

Coffee Chat Question

“What is the difference between S3 and EBS?”

Remember It Faster

Mind Map Answer

S3
Object storage, accessed over HTTP, virtually infinite
EBS
Block storage, a disk attached to one EC2 instance
Analogy
S3 = Dropbox, EBS = your laptop's SSD

Learn by Doing

Hands-on Keyboard

bash
aws s3 cp report.pdf s3://my-bucket/reports/
aws s3 ls s3://my-bucket/reports/

Think Beyond the Expected

What If?

Where would you store a database's data files — S3 or EBS?

EBS. Databases need low-latency block access and random reads/writes. S3 is for objects (backups, media, static assets), not live block I/O.

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Plain-language foundations

I'm preparing for a software engineering interview and want to understand this from scratch, as a beginner.

Topic: S3 (AWS)
Interview question: "What is the difference between S3 and EBS?"

Please:
1. Explain the core idea in simple, plain language, using an everyday analogy.
2. Define any technical terms you use.
3. Walk through one small, concrete example.
4. Finish with a single sentence I can easily remember.

Keep the tone friendly and assume I'm new to this topic.
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