AWS Lambda & Serverless

1. Serverless Cloud Compute - AWS Lambda

AWS Lambda is a serverless compute service that runs your code without the need to manage servers.

It allows you to focus on building great applications instead of worrying about infrastructure.

With AWS Lambda, you only pay when your code is executing, making it a cost-efficient solution.

No idle costs—you are charged only for the compute time used.

High-Level Steps to Understand AWS Lambda:

• Upload your code to AWS Lambda
• Configure an event source to trigger the function
• Code executes only when an event occurs
• You are charged only for the execution time

Example:

The light turns on only when it detects motion (just like Lambda runs when triggered).

It stays on only as long as needed (Lambda executes only for the required duration).

Once motion stops, the light automatically turns off (Lambda shuts down when execution is complete).

You only pay for the electricity used while the light is on (just like Lambda charges only for execution time).

What is AWS Lambda?

Serverless computing removes the need to manage cloud infrastructure.

This leads to lower costs and faster innovation by focusing on development instead of maintenance.

AWS Lambda can be used to:

• Create and launch applications seamlessly
• Observe and optimize application performance

2. AWS Cloud Serverless

Serverless allows you to focus only on writing code without managing servers.

The cloud provider takes care of infrastructure, scaling, and maintenance behind the scenes.

You simply deploy your code, and it runs whenever needed—without worrying about servers.

Difference Between EC2 and Serverless