A financial services firm is modernizing its message queuing system by migrating from self-managed message-oriented middleware systems to Amazon SQS. The firm is using SQS to migrate several applications to the cloud to ensure high availability and cost efficiency while simplifying administrative complexity and overhead. The data engineering team at the firm expects a peak rate of about 2,400 transactions per second to be processed via SQS. The messages must be processed in the order they are received. Which of the following options can be used to implement this system most cost-effectively?