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You want to build a photo-sharing app that automatically adjusts capacity as users upload photos. Which serverless feature best supports this?

hard📝 Best Practice Q15 of 15
AWS - Lambda
You want to build a photo-sharing app that automatically adjusts capacity as users upload photos. Which serverless feature best supports this?
AFixed monthly billing for predictable costs.
BAutomatic scaling of compute resources based on demand.
CManual server provisioning to control capacity.
DDedicated servers for consistent performance.
Step-by-Step Solution
Solution:

  1. Step 1: Identify app needs

    The app must handle varying user uploads, so capacity must adjust automatically.

  2. Step 2: Match serverless feature

    Automatic scaling lets compute resources grow or shrink with demand, ideal for this app.

  3. Final Answer:

    Automatic scaling of compute resources based on demand. -> Option B

  4. Quick Check:

    Serverless auto-scales to match user demand [OK]
Quick Trick: Auto-scaling matches resources to user demand [OK]
Common Mistakes:
MISTAKES
  • Choosing fixed billing which doesn't scale
  • Thinking manual provisioning is needed
  • Assuming dedicated servers are serverless

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