A company decided to move an event-driven application, which processes complex data, to the public cloud. The current datacenter is becoming expensive to maintain because the application only runs…

A mainframe compute environment is a legacy, on-premises solution designed for high-volume batch processing and transaction systems, not a cost-effective, event-driven public cloud solution.

A dedicated compute environment, while offering isolation, involves paying for reserved resources continuously, which is not cost-optimal for an application that is idle most of the time.

Serverless compute environments, such as AWS Lambda or Azure Functions, are ideal for event-driven applications because they automatically scale with demand and only charge for actual compute time used, eliminating costs during idle periods. This model perfectly matches the need for an application that runs only when an event occurs and has varying scale and complexity.

A high-performance compute environment is optimized for computationally intensive tasks requiring significant processing power, which is not the primary driver for an application that is idle most of the time and focused on event-driven execution.