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AWS Cloud Computing Cloud Computing: From Zero to Production Cost EC2 Module 3 — Compute Services

EC2 Spot Instances — Up to 90% Cheaper Compute

Reviewed & accurate
AI Summary
R Ram Pothuraju Reading…

What You Will Learn

Intermediate

  • What Spot Instances are
  • How they differ from On-Demand
  • When to use them and when not to

Spot Instances are spare EC2 capacity that AWS sells at up to 90% discount. The catch: AWS can terminate them with 2 minutes notice when they need the capacity back.

AspectOn-DemandSpot
PriceFull priceUp to 90% off
InterruptionNever2-min notice
Best forCritical workloadsBatch jobs, CI/CD, data processing
Do not use Spot for
Databases, web servers, anything that cannot tolerate sudden termination. Use Spot for: batch processing, CI/CD, ML training, image processing.

Practical Exercise

Go to EC2 -> Spot Requests
Request a Spot Instance (t2.micro)
Compare the price to On-Demand
Note the 2-minute warning feature

Key Takeaways

  • Spot = spare EC2 capacity, up to 90% cheaper.
  • AWS can terminate with 2-min notice.
  • Use for: batch jobs, CI/CD, ML training.
  • Do not use for: databases, critical web servers.
  • Spot Fleets combine Spot + On-Demand for resilience.
Previously: Lesson 21 covered User Data.
Today: You learned: Get EC2 at 90% discount (with a catch).
Next: Lesson 23 covers troubleshooting.
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