Ravi Sir's Cards › AWS
SQS and SNS with Lambda
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?
Bursty producers need a buffer. Many listeners need fan-out.
What is it?
SQS queues work; SNS topics notify many subscribers including Lambda.
How to do it
Event source mapping for SQS. SNS subscription protocol Lambda.
Example
Order service publishes to SNS → Lambda email + Lambda analytics both run.