AWS Cloud Practitioner CLF-C02 Practice Question

AWS Lambda is the optimal solution for executing code in response to events like incoming web requests without the need for server management. It is well-suited to handle unpredictable demand due to its ability to scale automatically with each trigger. This makes it ideal for situations where there are unexpected spikes in traffic. The pricing model, based on the number of requests and the duration of execution, also aligns with a variable workload, offering cost efficiency.

Other options are less suitable. Amazon EC2 requires you to provision and manage your own virtual servers. While Amazon ECS with AWS Fargate is a serverless compute engine for containers, it is designed for running containerized applications and involves more configuration than Lambda for this simple, event-driven task. Amazon SNS is a publish/subscribe messaging service, not a compute service; it is used for sending notifications and decoupling applications, but it does not execute application code itself.