Which service enables running batch workloads with automatic scaling and without managing infrastructure?

• A. Amazon EC2
• B. AWS Cost Explorer
• C. AWS Batch
• D. Alexa for Business

Answer: (C)

Managed batch processing with automatic scaling and no infrastructure management is provided by a service that handles job submission, queuing, and resource provisioning. AWS Batch automatically provisions the compute resources needed to run your batch workloads and scales them up or down based on the queue’s demand. It takes care of scheduling, dependencies, retries, and failure handling, so you don’t have to manage the underlying servers. You define job definitions and compute environments, and AWS Batch can use EC2 or AWS Fargate for execution, giving you server-management relief for containerized or traditional batch jobs. This contrasts with running directly on EC2, which requires you to manage and scale the instances yourself, while Cost Explorer is for analyzing costs and Alexa for Business is unrelated to compute workloads.