AWS Certified Data Analytics Specialty 2021 - Hands-On! - What is AWS Lambda?

AWS Lambda is a serverless computing service that allows users to run code without managing servers. It automatically scales based on the data input, making it ideal for big data applications. Lambda acts as a glue between services, enabling seamless data processing and integration. It is also used in serverless website architectures, handling backend processes like authentication and data retrieval. Lambda's flexibility allows it to connect various AWS services, transforming data and facilitating communication between components.

What is a key feature of AWS Lambda that makes it suitable for big data applications?

• It is limited to small datasets.

• It requires manual server provisioning.

• It automatically scales based on data input.

• It only supports Python code.

How does AWS Lambda contribute to building serverless websites?

• By managing server infrastructure.

• By acting as a bridge between services like API Gateway and Cognito.

• By storing static HTML files.

• By hosting dynamic content directly.

In the context of a chat application, what role does AWS Lambda play?

• It stores chat history directly.

• It retrieves chat history from DynamoDB.

• It serves as the front-end interface.

• It manages user sessions.

What is one advantage of using AWS Lambda over EC2 instances for simple tasks?

• Lambda requires more manual configuration.

• EC2 provides better integration with other AWS services.

• EC2 instances are easier to scale.

• Lambda is more cost-effective for simple tasks.

How can AWS Lambda be used to alert users about unusual system activities?

• By modifying user permissions.

• By logging events to a file.

• By triggering SNS requests based on data stream events.

• By directly sending emails to users.