The lambda triggered by the SQS should execute a state machine, where the first step is the required amount of sleep, and the second one is the lambda invocation. The best solution is to use AWS Step Functions. We dont have any control over this autoscaling of pollers as they are internally controlled by AWS. It will start with 5 concurrent connections (lets call this poller) and would increase the count based on the number of messages in the queue. Previously, customers could trigger Lambda functions from SQS queues in the same account only. Lambda service will poll your SQS queue in batches. This tutorial involves two AWS accounts: Account A refers to the account that contains your Lambda function, and Account B refers to the account that contains the Amazon SQS queue. This gives the maximal flexibility, and the ability to wait up to 1 year. AWS Lambda now allows customers to trigger functions from Amazon Simple Queue Service ( Amazon SQS) queues that are in a different AWS account. In this tutorial, you create a Lambda function that consumes messages from an Amazon Simple Queue Service (Amazon SQS) queue in a different AWS account. Use a Step Functions state machine (with a Wait state), as proposed in the original answer.This option configures a maximal waiting time for messages, while for some messages there can still be no waiting at all (when the max window time / size is reached). Your Lambda can aggregate messages for the specified duration ( up to 5 minutes), or until reaching the BatchSize ( up to 10,000 messages, 10 by default). Click the Quick-Create Queue option after selecting the type Standard Queue. Create a new SQS queue and call it whatever you want, like TestSQSLambda. You can use event source mappings to process items from a stream or queue in services that dont invoke Lambda functions directly. Configure MaximumBatchingWindowInSeconds in your Lambda event source (trigger). The steps to create SQS Queue while setting up SQS Lambda Connection are as follows: Navigate to Simple Queue Service in the AWS Console. An event source mapping is a Lambda resource that reads from an event source and invokes a Lambda function.Configure DelaySeconds for the queue, so that new messages will be invisible to consumers (such as your Lambda) for a specific amount of time, up to 15 minutes.There are 3 ways you can consider for delaying message delivery from SQS to Lambda:
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