Ravi Sir's Cards › AWS
On-demand vs provisioned
What is a VPC: your own private network inside one AWS Region, example ThreeTierVpc 10.0.0.0/16.
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What this card says
Why do we need it?
Guessing capacity wrong either throttles or wastes money.
What is it?
On-demand pays per request. Provisioned reserves RCUs/WCUs.
How to do it
Labs and spiky apps: on-demand. Steady 24/7 known load: provisioned.
Example
Hackathon traffic unknown → on-demand. Nightly batch with flat load → provisioned.