Ravi Sir's Cards › AWS
S3 ObjectCreated trigger
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?
Manual thumbnail jobs miss uploads. Events never sleep.
What is it?
S3 can invoke Lambda on ObjectCreated for a prefix or suffix.
How to do it
Add trigger → S3 → bucket → event type → prefix images/ suffix .jpg.
s3:ObjectCreated:*
Example
Upload hero.jpg → Lambda writes thumbs/hero.jpg.