Answer: AWS Batch

AWS Batch is the correct service for this requirement because: - **AWS Batch** is specifically designed for running large-scale batch computing workloads on AWS - It automatically provisions compute resources and optimizes the job distribution - It can efficiently handle hundreds of thousands of computing jobs by dynamically scaling the required infrastructure - AWS Batch manages the queuing, scheduling, and execution of batch jobs across the full range of AWS compute services **Why other options are incorrect:** - **AWS Step Functions**: Used for orchestrating workflows and coordinating multiple AWS services, not specifically optimized for large-scale batch computing jobs - **AWS Service Catalog**: Used for creating and managing catalogs of IT services, not for running computing jobs - **Amazon SQS**: A message queuing service for decoupling application components, but doesn't provide the full job scheduling and compute management capabilities needed for this scale of batch processing

Author: Ritesh Yadav