Ravi Sir's Cards › AWS
How is Lambda billed?
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
What it is
Per request plus GB-seconds: memory setting × duration.
Why it matters
Idle time is not billed like EC2. Cold starts still count as duration.
How / example
Raise memory if CPU-bound; wall time often drops and can cost less.