Creating the queue is straightforward.

Go to Application Integration - Simple Queue Service.

Click “Create New Queue”, enter a Queue Name, and click “Quick-Create Queue”.

You may also want to configure the queue, enabling long polling by setting a Receive Message Wait Time might be useful for the application that will be collecting the messages.

The IAM policy and Lambda function will need the queue's ARN. Click on the queue name and you will see this under Details. It will look something like: arn:aws:sqs:Region:123456789:QueueName