A company has an on-premises application.

AWS Lambda is a serverless compute service that is ideal for applications with short-running processes and low-frequency invocation, as it only charges for the compute time consumed. Since the application is invoked only a few times a day and runs for less than 5 minutes, Lambda is the most cost-effective option. ECS, EKS, and EC2 are better suited for more persistent workloads and would be more costly in this use case.