Pool-Based invocation model allows us to integrate with AWS Stream and Queue

based services.

▪ Lambda will poll from the AWS SQS or Kinesis streams, retrieve records, and invoke

functions.

▪ Data stream or queue are read in batches,

▪ The function receives multiple items when execute function.

▪ Batch sizes can configure according to service types

▪ SQS + Lambda

▪ Stream based processing with DynamoDB Streams + Lambda

▪ Triggered AWS services of Event Source Mapping invocation; Amazon Kinesis,

DynamoDB, Simple Queue Service (SQS)

https://docs.aws.amazon.com/lambda/latest/dg/invocation-eventsourcemapping.html