Amazon Simple Queue Service (SQS) is a fully managed message queuing service that enables you to decouple and scale microservices, distributed systems, and serverless applications.
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_SendMessage.html
Sqs.SendMessage('us-west-2','xxxxxxx','my_queue','Hello');
https://docs.aws.amazon.com/AWSSimpleQueueService/latest/APIReference/API_SendMessageBatch.html
List<String> messages = new List<String>{'Hello','Bonjour','Ciao'};
Sqs.SendMessageBatch('us-west-2','xxxxxxx','my_queue',messages);