ACloud Guru Certified Cloud Practitioner Practice Exam

Which AWS service allows you to run code without worrying about managing servers?

1. EC2

2. CloudFormation

3. AWS Lambda

4. ElastiCache

The correct answer is: AWS Lambda

AWS Lambda is a serverless computing service that enables you to run code in response to events without the need to provision, scale, or manage servers. This means you can focus solely on writing the code that you want to execute, while AWS takes care of the underlying infrastructure. With AWS Lambda, you simply upload your code and define how it should be triggered, such as by certain events in other AWS services, HTTP requests through API Gateway, or scheduled events. AWS automatically handles the server management, including scaling and fault tolerance. This allows you to build applications that can respond quickly to changes in traffic or events without the complexity of managing servers, making it an ideal solution for applications that experience variable workloads. In contrast, other services like EC2 (Elastic Compute Cloud) require you to set up and manage virtual servers, which involves more administrative overhead. CloudFormation is a tool for infrastructure as code, used to provision and manage AWS resources in a declarative way, but it does not directly execute code. ElastiCache is a caching service that helps to improve application performance by allowing data to be retrieved from memory rather than disk, but it also does not run code without managing servers. Therefore, AWS Lambda stands out as the best fit for running code